Verywell Health / Jhett Thompson
Period underwear is normal underwear with a built-in pad or gussetthat allows you to manage that time of the month without worrying about pads, tampons, or menstrual cups.The gusset is made of absorbent fabric, which catches period blood and wicks it away from your skin to keep you dry. It’s an effective, environmentally friendly option for anyone who doesn’t want to wear pads or tampons or needs a backup option when using other period products (like period cups), saysStaci Tanouye, an OBGYN who works in private practice in Jacksonville, Florida. She adds that while they can be initially more expensive, they can be cleaned and re-used, saving money over time.
To find the best period underwear, our testing team at theVerywell Labsampled 46 of the highest-rated pairs on the market and rated them based on theirabsorbency, comfort, and value. We also consulted gynecologists for their recommendations for finding the best period underwear for your specific menstrual needs.
Materials to Look for in Period Underwear
Tanouye explains that period underwear typically has three fabric layers with different purposes. She suggests prioritizing the following in each layer:
Lastly, she advises that you check the label before purchasing if you’re allergic to any of these materials.
What Healthcare Providers Want You to Know
Verywell Health FYIThinx recently settled a lawsuit (Dickens, et al. v. Thinx Inc.) surrounding the presence of per- and poly-fluoroalkyl substances (PFAS) and silver nanoparticles, which were found in multiple styles of the brand’s underwear following independent testing. The suit alleges that the presence of these chemicals goes against the brand’s advertising as free of harmful chemicals and toxic metals. After speaking to healthcare providers and conducting research to find out more about how the presence of PFAS in period underwear can affect consumers, we’ve decided to continue to include Thinx period underwear on our list. You can read more about PFAS and period underwear in our “Frequently Asked Questions” section below.
Verywell Health FYI
Thinx recently settled a lawsuit (Dickens, et al. v. Thinx Inc.) surrounding the presence of per- and poly-fluoroalkyl substances (PFAS) and silver nanoparticles, which were found in multiple styles of the brand’s underwear following independent testing. The suit alleges that the presence of these chemicals goes against the brand’s advertising as free of harmful chemicals and toxic metals. After speaking to healthcare providers and conducting research to find out more about how the presence of PFAS in period underwear can affect consumers, we’ve decided to continue to include Thinx period underwear on our list. You can read more about PFAS and period underwear in our “Frequently Asked Questions” section below.
Our Top PicksBest Overall:Thinx For All Super Absorbency Brief at Target$17Jump to ReviewBest for Heavy Flow:Goat Union Overnight Period Underwear at Amazon$19Jump to ReviewBest Comfort:Cora Period Underwear at Amazon$25Jump to ReviewBest Plus Size:TomboyX First Line Leakproof Bikini at Tomboyx.comJump to ReviewBest Cotton:Rael Reusable Period Underwear at Amazon$35Jump to ReviewBest for Light Flow:Knix Medium Absorbency Leakproof Boyshort at KnixJump to ReviewBest for Exercise:Thinx Cycle Shorts at Amazon$21Jump to ReviewBest for Sleep:Thinx Period Pajama Sleep Shorts at Amazon$50Jump to Review
Our Top Picks
Best Overall:Thinx For All Super Absorbency Brief at Target$17Jump to ReviewBest for Heavy Flow:Goat Union Overnight Period Underwear at Amazon$19Jump to ReviewBest Comfort:Cora Period Underwear at Amazon$25Jump to ReviewBest Plus Size:TomboyX First Line Leakproof Bikini at Tomboyx.comJump to ReviewBest Cotton:Rael Reusable Period Underwear at Amazon$35Jump to ReviewBest for Light Flow:Knix Medium Absorbency Leakproof Boyshort at KnixJump to ReviewBest for Exercise:Thinx Cycle Shorts at Amazon$21Jump to ReviewBest for Sleep:Thinx Period Pajama Sleep Shorts at Amazon$50Jump to Review
Best Overall:Thinx For All Super Absorbency Brief at Target$17Jump to Review
Best Overall:Thinx For All Super Absorbency Brief at Target$17
Best Overall:
Best for Heavy Flow:Goat Union Overnight Period Underwear at Amazon$19Jump to Review
Best for Heavy Flow:Goat Union Overnight Period Underwear at Amazon$19
Best for Heavy Flow:
Best Comfort:Cora Period Underwear at Amazon$25Jump to Review
Best Comfort:Cora Period Underwear at Amazon$25
Best Comfort:
Best Plus Size:TomboyX First Line Leakproof Bikini at Tomboyx.comJump to Review
Best Plus Size:TomboyX First Line Leakproof Bikini at Tomboyx.com
Best Plus Size:
Best Cotton:Rael Reusable Period Underwear at Amazon$35Jump to Review
Best Cotton:Rael Reusable Period Underwear at Amazon$35
Best Cotton:
Best for Light Flow:Knix Medium Absorbency Leakproof Boyshort at KnixJump to Review
Best for Light Flow:Knix Medium Absorbency Leakproof Boyshort at Knix
Best for Light Flow:
Best for Exercise:Thinx Cycle Shorts at Amazon$21Jump to Review
Best for Exercise:Thinx Cycle Shorts at Amazon$21
Best for Exercise:
Best for Sleep:Thinx Period Pajama Sleep Shorts at Amazon$50Jump to Review
Best for Sleep:Thinx Period Pajama Sleep Shorts at Amazon$50
Best for Sleep:
Best OverallThinx For All Super Absorbency BriefPHOTO: Target$17 at TargetView on Thinx.com$17 at CVSProsAbsorbentGreat valueStretchy and comfortableConsLimited coverage in the backKey Specs:Absorbency:Super |Material:Cotton, elastane |Fit:Mid-rise |Sizes:XS - 4X |Care Instructions:Machine wash, lay flat to dry/line dryWhy We Recommend ItWe lovedThinx For All Women’s Super Absorbency Briefperiod underwear’s overall value and comfort. This period underwear also featuresamazing absorbency(five tampons or 2.5 pads worth). You won’t be disappointed if you need period underwear with super absorbency. It’s also agreat choice for light and medium-flow days.Thinx underwear features acomfortable mid-rise waist. When we tried them, they had a nice,cottony feel. Thegusset felt like a soft washclothand was thicker than other options we tried. Made of95% cottonand5% elastane, the underwear iseasy to wash(machine wash cold) anddries quickly.Keep in MindThe only downside is that there isn’t as much coverage in the back as some other pairs we tried. Other than that, this underwear definitely tops our list for comfort, absorbency, and affordability.PHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaBest for Heavy FlowGoat Union Overnight Period UnderwearPHOTO: Amazon$19 at AmazonProsGreat absorptionAffordable priceWide range of sizesConsHigh waist might not be comfortable for everyoneKey Specs:Absorbency:Light-heavy |Material:Bamboo, cotton, polyester, nylon, spandex |Fit:Brief |Sizes:XS - 5X |Care Instructions:Machine wash cold, gentle cycle, tumble dry extra-low or hang dryWhy We Recommend ItGoat Union, Overnight Period Underwear,topped our list for heavy-flow days or overnight use. Goat Union claims its underwear can absorb6 teaspoons of fluid, and this claim held up to our testing. We noticed that they absorbed slower than we expected but still were effective—the gusset was wet, and the exterior was dry with no overspill.Themoisture-wicking bamboo fabricandfour-layer designkeep you feelingcomfortableeven during the heaviest flow. Thehigh waistandhigh gussetprovideamplecoverage. The fabric wasthickandsoft.Considering this underwear’s dependable absorbency andaffordable price point, it is a winner.Keep in MindThe underwear had a ton of seams everywhere, which does not feel great, especially if you’re not into seams.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaBest ComfortCora Period UnderwearPHOTO: Target$25 at Amazon$25 at Walmart$20 at TargetProsSoft,comfortable fabricAmazing absorbencyClaims to be free of PFAS or azo dyesConsNot much coverage in the backNot as many sizes as other brandsKey Specs:Absorbency:Moderate |Material:Cotton, polyester, elastane |Fit:Bikini |Sizes:XS - XXL |Care Instructions:Machine wash delicate, lay flat to dry or line dryWhy We Recommend ItCora Period Underwearabsorbs the equivalent of three tampons’ worth of period blood, making them a great option formoderate flow. Thebikini-style underwearis100% cottonthroughout, with a bit of elastane to add some stretch. Thethick elastic waistbandhas afirm gussetthat feels almost like a pad sans any easily visible seams like some other options.Cora prides itself on brand sustainability and responsibility. For every product purchased, the company donates products and educational resources to BIPOC communities. According to the company, their period underwear is also made without any PFAS or azo dyes.Keep in MindOther options had better coverage—the gusset didn’t reach back as far as others.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaBest Plus SizeTomboyX First Line Leakproof BikiniPHOTO: tomboyxView on Tomboyx.com$20 at NordstromProsVery leak-proofOeko-Tex Standard 100 CertifiedGood range of sizesConsDoesn’t absorb advertised amountKey Specs:Absorbency:Light/moderate |Material:Cotton, polyester, spandex |Fit:Bikini |Sizes:3XS - 6X |Care Instructions:Machine wash cold in mesh bag, line dryWhy We Recommend ItTOMBOYX First Line Leakproof Bikini Period Underwearis available in various sizes, from3XS to 6X. The fabric does an amazing job absorbing fluid and repelling odors. It’s alsoOeko-Tex Standard 100 Certified, meaning it does not contain any known toxic chemicals (including those in the PFAS family). We wore these when we slept or worked out. Theystayed upandnever rolled, and we loved the look of the waistband, too.Keep in MindThey hold less period blood than advertised. We found that they absorbed 6 teaspoons without leakage, making this a good choice for moderate to heavy flow days.PHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Jhett ThompsonBest CottonRael Reusable Period UnderwearPHOTO: Nordstrom$35 at AmazonView on Getrael.comProsGreat valueOutside stays dryConsRuns on the small sideOnly four size optionsKey Specs:Absorbency:Light/moderate |Material:Cotton, rayon polyester, spandex |Fit:Bikini |Sizes:XS - XL |Care Instructions:Cold rinse, machine wash cold, line dry or lay flat to dryWhy We Recommend ItCotton is a hard fabric to beat when it comes to balancing comfort and absorption. If you’re a cotton lover,Rael Reusable Period Underwearshould be at the top of your list. The underwear is95% cotton, with a small amount of spandex for stretchiness. The gusset is95% rayonfor an extra absorption boost. The underwear also features aleak-proof polyester barrierto keep you dry.It absorbed 3 teaspoons easily during testing. The outside felt dry yet cool to the touch, which we liked. The underwear also comes with a handy reusable pouch for machine washing. Just be sure to do a pre-rinse before the main wash.Keep in MindThis underwear isn’t as stretchy or soft as some of the other products we tried, and according to the manufacturer, it also runs on the small side. Both qualities are fairly typical of cotton.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaBest for Light FlowKnix Medium Absorbency Leakproof BoyshortPHOTO: KnixView on KnixProsNo leakageGreat for teensConsMinimal amount of fluid transferKey Specs:Absorbency:Light/moderate |Material:Nylon, Lycra, cotton, spandex, carbon, polyester |Fit:Boyshort |Sizes:XS - XXXXL |Care Instructions:Machine wash cold with mild detergent (no bleach), lay flat to dryWhy We Recommend ItKnix Leakproof Boyshortsabsorbed the advertised amount of3 teaspoonsvery quickly, withno leakageand minimal transfer, making it a good option forlight or moderate flow. We love this choice for teens who may have just started their period or have a lighter flow. They felt great against the skin and also didn’t have any annoying tags.This underwear is also extremely comfortable, so if you have a heavy flow and are looking for a backup pair that fits like a second skin, check these out.Another period underwear worth mentioning that’s ideal for when your period is transitioning from moderate to light is theEco Woman EcoPanties Seamless underwear.Like the Knix underwear, it’s made fromcotton, spandex, and polyester, but what sets it apart is that it also featuresbamboo and a waterproof PUL layerto keep moisture at bay. It can hold up to 4 teaspoons of liquid (slightly more than the Knix pair), but the washing process isn’t as easy as other options we tested.Keep in MindWe did experience very minimal transfer when testing this pair.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaBest for ExerciseThinx Cycle ShortsPHOTO: Amazon$21 at AmazonProsSoft fabricLots of pocketsBreathable fabricConsNot for heavy flowKey Specs:Absorbency:|Material:Nylon, Lycra, cotton, spandex, carbon, polyester|Fit:Boyshort |Sizes:XS - XL |Care Instructions:Machine wash cold with mild detergent (no bleach), lay flat to dryWhy We Recommend ItThinx Cycle Shortsare our choice for the best exercise period underwear. Not only do they absorb the advertised amount of period blood (about 3 teaspoons, orlight flow), but they are alsoincredibly comfortable, making them a great choice for long workouts. They also featureseveral deep pocketswhere you can store small items if you’re on a long bike ride or run.We think this is a great option for people who want to wear cozy athleisure towards the end of their period or as bonus protection with other menstrual options.Keep in MindThis isn’t the best option for a heavy flow.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaBest for SleepThinx Period Pajama Sleep ShortsPHOTO: Thinx$50 at AmazonView on Thinx.comProsSuper absorbentComfortableCute designConsSmall amount of gusset transferKey Specs:Absorbency:Super |Material:Modal, cotton, polyester, elastane |Fit:Short with built-in bikini underwear |Sizes:XS - 4X |Care Instructions:Hand wash or machine wash cold, delicate, hang dryWhy We Recommend ItDue to theirdependable absorbencyandamazing comfort, you’ll get a great night’s sleep inThinx Period Pajama Sleep Shorts. The shorts featurebuilt-in underwearwith anabsorbent gusset, but they look like a normal pair of pajama shorts from the outside. They were super absorbent during testing. These shortsheld five tampons, or 8 teaspoons, of liquid in our testing.Comfort is also a key feature. They were heavy and thick. Thegusset felt akin to terrycloth, and the shorts were nice and soft. We liked that the padding went up fairly high up the back and front. The pockets and buttons also add a stylish flair. We also think these would be great items for postpartum use.Keep in MindThere was a little bit of fluid transfer on the gusset, but the exterior remained completely dry.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia Almeida
Best OverallThinx For All Super Absorbency BriefPHOTO: Target$17 at TargetView on Thinx.com$17 at CVSProsAbsorbentGreat valueStretchy and comfortableConsLimited coverage in the backKey Specs:Absorbency:Super |Material:Cotton, elastane |Fit:Mid-rise |Sizes:XS - 4X |Care Instructions:Machine wash, lay flat to dry/line dryWhy We Recommend ItWe lovedThinx For All Women’s Super Absorbency Briefperiod underwear’s overall value and comfort. This period underwear also featuresamazing absorbency(five tampons or 2.5 pads worth). You won’t be disappointed if you need period underwear with super absorbency. It’s also agreat choice for light and medium-flow days.Thinx underwear features acomfortable mid-rise waist. When we tried them, they had a nice,cottony feel. Thegusset felt like a soft washclothand was thicker than other options we tried. Made of95% cottonand5% elastane, the underwear iseasy to wash(machine wash cold) anddries quickly.Keep in MindThe only downside is that there isn’t as much coverage in the back as some other pairs we tried. Other than that, this underwear definitely tops our list for comfort, absorbency, and affordability.PHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia Almeida
Best OverallThinx For All Super Absorbency BriefPHOTO: Target$17 at TargetView on Thinx.com$17 at CVS
Best OverallThinx For All Super Absorbency Brief
Best Overall
Thinx For All Super Absorbency Brief
PHOTO: Target
$17 at TargetView on Thinx.com$17 at CVS
ProsAbsorbentGreat valueStretchy and comfortableConsLimited coverage in the back
ProsAbsorbentGreat valueStretchy and comfortable
Absorbent
Great value
Stretchy and comfortable
ConsLimited coverage in the back
Limited coverage in the back
Key Specs:
Absorbency:Super |Material:Cotton, elastane |Fit:Mid-rise |Sizes:XS - 4X |Care Instructions:Machine wash, lay flat to dry/line dry
Why We Recommend It
We lovedThinx For All Women’s Super Absorbency Briefperiod underwear’s overall value and comfort. This period underwear also featuresamazing absorbency(five tampons or 2.5 pads worth). You won’t be disappointed if you need period underwear with super absorbency. It’s also agreat choice for light and medium-flow days.
Thinx underwear features acomfortable mid-rise waist. When we tried them, they had a nice,cottony feel. Thegusset felt like a soft washclothand was thicker than other options we tried. Made of95% cottonand5% elastane, the underwear iseasy to wash(machine wash cold) anddries quickly.
Keep in Mind
The only downside is that there isn’t as much coverage in the back as some other pairs we tried. Other than that, this underwear definitely tops our list for comfort, absorbency, and affordability.
PHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia Almeida
Best for Heavy FlowGoat Union Overnight Period UnderwearPHOTO: Amazon$19 at AmazonProsGreat absorptionAffordable priceWide range of sizesConsHigh waist might not be comfortable for everyoneKey Specs:Absorbency:Light-heavy |Material:Bamboo, cotton, polyester, nylon, spandex |Fit:Brief |Sizes:XS - 5X |Care Instructions:Machine wash cold, gentle cycle, tumble dry extra-low or hang dryWhy We Recommend ItGoat Union, Overnight Period Underwear,topped our list for heavy-flow days or overnight use. Goat Union claims its underwear can absorb6 teaspoons of fluid, and this claim held up to our testing. We noticed that they absorbed slower than we expected but still were effective—the gusset was wet, and the exterior was dry with no overspill.Themoisture-wicking bamboo fabricandfour-layer designkeep you feelingcomfortableeven during the heaviest flow. Thehigh waistandhigh gussetprovideamplecoverage. The fabric wasthickandsoft.Considering this underwear’s dependable absorbency andaffordable price point, it is a winner.Keep in MindThe underwear had a ton of seams everywhere, which does not feel great, especially if you’re not into seams.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia Almeida
Best for Heavy FlowGoat Union Overnight Period UnderwearPHOTO: Amazon$19 at Amazon
Best for Heavy FlowGoat Union Overnight Period Underwear
Best for Heavy Flow
Goat Union Overnight Period Underwear
PHOTO: Amazon
$19 at Amazon
ProsGreat absorptionAffordable priceWide range of sizesConsHigh waist might not be comfortable for everyone
ProsGreat absorptionAffordable priceWide range of sizes
Great absorption
Affordable price
Wide range of sizes
ConsHigh waist might not be comfortable for everyone
High waist might not be comfortable for everyone
Absorbency:Light-heavy |Material:Bamboo, cotton, polyester, nylon, spandex |Fit:Brief |Sizes:XS - 5X |Care Instructions:Machine wash cold, gentle cycle, tumble dry extra-low or hang dry
Goat Union, Overnight Period Underwear,topped our list for heavy-flow days or overnight use. Goat Union claims its underwear can absorb6 teaspoons of fluid, and this claim held up to our testing. We noticed that they absorbed slower than we expected but still were effective—the gusset was wet, and the exterior was dry with no overspill.
Themoisture-wicking bamboo fabricandfour-layer designkeep you feelingcomfortableeven during the heaviest flow. Thehigh waistandhigh gussetprovideamplecoverage. The fabric wasthickandsoft.Considering this underwear’s dependable absorbency andaffordable price point, it is a winner.
The underwear had a ton of seams everywhere, which does not feel great, especially if you’re not into seams.
PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia Almeida
Best ComfortCora Period UnderwearPHOTO: Target$25 at Amazon$25 at Walmart$20 at TargetProsSoft,comfortable fabricAmazing absorbencyClaims to be free of PFAS or azo dyesConsNot much coverage in the backNot as many sizes as other brandsKey Specs:Absorbency:Moderate |Material:Cotton, polyester, elastane |Fit:Bikini |Sizes:XS - XXL |Care Instructions:Machine wash delicate, lay flat to dry or line dryWhy We Recommend ItCora Period Underwearabsorbs the equivalent of three tampons’ worth of period blood, making them a great option formoderate flow. Thebikini-style underwearis100% cottonthroughout, with a bit of elastane to add some stretch. Thethick elastic waistbandhas afirm gussetthat feels almost like a pad sans any easily visible seams like some other options.Cora prides itself on brand sustainability and responsibility. For every product purchased, the company donates products and educational resources to BIPOC communities. According to the company, their period underwear is also made without any PFAS or azo dyes.Keep in MindOther options had better coverage—the gusset didn’t reach back as far as others.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia Almeida
Best ComfortCora Period UnderwearPHOTO: Target$25 at Amazon$25 at Walmart$20 at Target
Best ComfortCora Period Underwear
Best Comfort
Cora Period Underwear
$25 at Amazon$25 at Walmart$20 at Target
ProsSoft,comfortable fabricAmazing absorbencyClaims to be free of PFAS or azo dyesConsNot much coverage in the backNot as many sizes as other brands
ProsSoft,comfortable fabricAmazing absorbencyClaims to be free of PFAS or azo dyes
Soft,comfortable fabric
Amazing absorbency
Claims to be free of PFAS or azo dyes
ConsNot much coverage in the backNot as many sizes as other brands
Not much coverage in the back
Not as many sizes as other brands
Absorbency:Moderate |Material:Cotton, polyester, elastane |Fit:Bikini |Sizes:XS - XXL |Care Instructions:Machine wash delicate, lay flat to dry or line dry
Cora Period Underwearabsorbs the equivalent of three tampons’ worth of period blood, making them a great option formoderate flow. Thebikini-style underwearis100% cottonthroughout, with a bit of elastane to add some stretch. Thethick elastic waistbandhas afirm gussetthat feels almost like a pad sans any easily visible seams like some other options.
Cora prides itself on brand sustainability and responsibility. For every product purchased, the company donates products and educational resources to BIPOC communities. According to the company, their period underwear is also made without any PFAS or azo dyes.
Other options had better coverage—the gusset didn’t reach back as far as others.
PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia Almeida
Best Plus SizeTomboyX First Line Leakproof BikiniPHOTO: tomboyxView on Tomboyx.com$20 at NordstromProsVery leak-proofOeko-Tex Standard 100 CertifiedGood range of sizesConsDoesn’t absorb advertised amountKey Specs:Absorbency:Light/moderate |Material:Cotton, polyester, spandex |Fit:Bikini |Sizes:3XS - 6X |Care Instructions:Machine wash cold in mesh bag, line dryWhy We Recommend ItTOMBOYX First Line Leakproof Bikini Period Underwearis available in various sizes, from3XS to 6X. The fabric does an amazing job absorbing fluid and repelling odors. It’s alsoOeko-Tex Standard 100 Certified, meaning it does not contain any known toxic chemicals (including those in the PFAS family). We wore these when we slept or worked out. Theystayed upandnever rolled, and we loved the look of the waistband, too.Keep in MindThey hold less period blood than advertised. We found that they absorbed 6 teaspoons without leakage, making this a good choice for moderate to heavy flow days.PHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Jhett Thompson
Best Plus SizeTomboyX First Line Leakproof BikiniPHOTO: tomboyxView on Tomboyx.com$20 at Nordstrom
Best Plus SizeTomboyX First Line Leakproof Bikini
Best Plus Size
TomboyX First Line Leakproof Bikini
PHOTO: tomboyx
View on Tomboyx.com$20 at Nordstrom
ProsVery leak-proofOeko-Tex Standard 100 CertifiedGood range of sizesConsDoesn’t absorb advertised amount
ProsVery leak-proofOeko-Tex Standard 100 CertifiedGood range of sizes
Very leak-proof
Oeko-Tex Standard 100 Certified
Good range of sizes
ConsDoesn’t absorb advertised amount
Doesn’t absorb advertised amount
Absorbency:Light/moderate |Material:Cotton, polyester, spandex |Fit:Bikini |Sizes:3XS - 6X |Care Instructions:Machine wash cold in mesh bag, line dry
TOMBOYX First Line Leakproof Bikini Period Underwearis available in various sizes, from3XS to 6X. The fabric does an amazing job absorbing fluid and repelling odors. It’s alsoOeko-Tex Standard 100 Certified, meaning it does not contain any known toxic chemicals (including those in the PFAS family). We wore these when we slept or worked out. Theystayed upandnever rolled, and we loved the look of the waistband, too.
They hold less period blood than advertised. We found that they absorbed 6 teaspoons without leakage, making this a good choice for moderate to heavy flow days.
PHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Jhett Thompson
Best CottonRael Reusable Period UnderwearPHOTO: Nordstrom$35 at AmazonView on Getrael.comProsGreat valueOutside stays dryConsRuns on the small sideOnly four size optionsKey Specs:Absorbency:Light/moderate |Material:Cotton, rayon polyester, spandex |Fit:Bikini |Sizes:XS - XL |Care Instructions:Cold rinse, machine wash cold, line dry or lay flat to dryWhy We Recommend ItCotton is a hard fabric to beat when it comes to balancing comfort and absorption. If you’re a cotton lover,Rael Reusable Period Underwearshould be at the top of your list. The underwear is95% cotton, with a small amount of spandex for stretchiness. The gusset is95% rayonfor an extra absorption boost. The underwear also features aleak-proof polyester barrierto keep you dry.It absorbed 3 teaspoons easily during testing. The outside felt dry yet cool to the touch, which we liked. The underwear also comes with a handy reusable pouch for machine washing. Just be sure to do a pre-rinse before the main wash.Keep in MindThis underwear isn’t as stretchy or soft as some of the other products we tried, and according to the manufacturer, it also runs on the small side. Both qualities are fairly typical of cotton.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia Almeida
Best CottonRael Reusable Period UnderwearPHOTO: Nordstrom$35 at AmazonView on Getrael.com
Best CottonRael Reusable Period Underwear
Best Cotton
Rael Reusable Period Underwear
PHOTO: Nordstrom
$35 at AmazonView on Getrael.com
ProsGreat valueOutside stays dryConsRuns on the small sideOnly four size options
ProsGreat valueOutside stays dry
Outside stays dry
ConsRuns on the small sideOnly four size options
Runs on the small side
Only four size options
Absorbency:Light/moderate |Material:Cotton, rayon polyester, spandex |Fit:Bikini |Sizes:XS - XL |Care Instructions:Cold rinse, machine wash cold, line dry or lay flat to dry
Cotton is a hard fabric to beat when it comes to balancing comfort and absorption. If you’re a cotton lover,Rael Reusable Period Underwearshould be at the top of your list. The underwear is95% cotton, with a small amount of spandex for stretchiness. The gusset is95% rayonfor an extra absorption boost. The underwear also features aleak-proof polyester barrierto keep you dry.
It absorbed 3 teaspoons easily during testing. The outside felt dry yet cool to the touch, which we liked. The underwear also comes with a handy reusable pouch for machine washing. Just be sure to do a pre-rinse before the main wash.
This underwear isn’t as stretchy or soft as some of the other products we tried, and according to the manufacturer, it also runs on the small side. Both qualities are fairly typical of cotton.
PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia Almeida
Best for Light FlowKnix Medium Absorbency Leakproof BoyshortPHOTO: KnixView on KnixProsNo leakageGreat for teensConsMinimal amount of fluid transferKey Specs:Absorbency:Light/moderate |Material:Nylon, Lycra, cotton, spandex, carbon, polyester |Fit:Boyshort |Sizes:XS - XXXXL |Care Instructions:Machine wash cold with mild detergent (no bleach), lay flat to dryWhy We Recommend ItKnix Leakproof Boyshortsabsorbed the advertised amount of3 teaspoonsvery quickly, withno leakageand minimal transfer, making it a good option forlight or moderate flow. We love this choice for teens who may have just started their period or have a lighter flow. They felt great against the skin and also didn’t have any annoying tags.This underwear is also extremely comfortable, so if you have a heavy flow and are looking for a backup pair that fits like a second skin, check these out.Another period underwear worth mentioning that’s ideal for when your period is transitioning from moderate to light is theEco Woman EcoPanties Seamless underwear.Like the Knix underwear, it’s made fromcotton, spandex, and polyester, but what sets it apart is that it also featuresbamboo and a waterproof PUL layerto keep moisture at bay. It can hold up to 4 teaspoons of liquid (slightly more than the Knix pair), but the washing process isn’t as easy as other options we tested.Keep in MindWe did experience very minimal transfer when testing this pair.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia Almeida
Best for Light FlowKnix Medium Absorbency Leakproof BoyshortPHOTO: KnixView on Knix
Best for Light FlowKnix Medium Absorbency Leakproof Boyshort
Best for Light Flow
Knix Medium Absorbency Leakproof Boyshort
PHOTO: Knix
View on Knix
ProsNo leakageGreat for teensConsMinimal amount of fluid transfer
ProsNo leakageGreat for teens
No leakage
Great for teens
ConsMinimal amount of fluid transfer
Minimal amount of fluid transfer
Absorbency:Light/moderate |Material:Nylon, Lycra, cotton, spandex, carbon, polyester |Fit:Boyshort |Sizes:XS - XXXXL |Care Instructions:Machine wash cold with mild detergent (no bleach), lay flat to dry
Knix Leakproof Boyshortsabsorbed the advertised amount of3 teaspoonsvery quickly, withno leakageand minimal transfer, making it a good option forlight or moderate flow. We love this choice for teens who may have just started their period or have a lighter flow. They felt great against the skin and also didn’t have any annoying tags.
This underwear is also extremely comfortable, so if you have a heavy flow and are looking for a backup pair that fits like a second skin, check these out.
Another period underwear worth mentioning that’s ideal for when your period is transitioning from moderate to light is theEco Woman EcoPanties Seamless underwear.Like the Knix underwear, it’s made fromcotton, spandex, and polyester, but what sets it apart is that it also featuresbamboo and a waterproof PUL layerto keep moisture at bay. It can hold up to 4 teaspoons of liquid (slightly more than the Knix pair), but the washing process isn’t as easy as other options we tested.
We did experience very minimal transfer when testing this pair.
PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia Almeida
Best for ExerciseThinx Cycle ShortsPHOTO: Amazon$21 at AmazonProsSoft fabricLots of pocketsBreathable fabricConsNot for heavy flowKey Specs:Absorbency:|Material:Nylon, Lycra, cotton, spandex, carbon, polyester|Fit:Boyshort |Sizes:XS - XL |Care Instructions:Machine wash cold with mild detergent (no bleach), lay flat to dryWhy We Recommend ItThinx Cycle Shortsare our choice for the best exercise period underwear. Not only do they absorb the advertised amount of period blood (about 3 teaspoons, orlight flow), but they are alsoincredibly comfortable, making them a great choice for long workouts. They also featureseveral deep pocketswhere you can store small items if you’re on a long bike ride or run.We think this is a great option for people who want to wear cozy athleisure towards the end of their period or as bonus protection with other menstrual options.Keep in MindThis isn’t the best option for a heavy flow.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia Almeida
Best for ExerciseThinx Cycle ShortsPHOTO: Amazon$21 at Amazon
Best for ExerciseThinx Cycle Shorts
Best for Exercise
Thinx Cycle Shorts
$21 at Amazon
ProsSoft fabricLots of pocketsBreathable fabricConsNot for heavy flow
ProsSoft fabricLots of pocketsBreathable fabric
Soft fabric
Lots of pockets
Breathable fabric
ConsNot for heavy flow
Not for heavy flow
Absorbency:|Material:Nylon, Lycra, cotton, spandex, carbon, polyester|Fit:Boyshort |Sizes:XS - XL |Care Instructions:Machine wash cold with mild detergent (no bleach), lay flat to dry
Thinx Cycle Shortsare our choice for the best exercise period underwear. Not only do they absorb the advertised amount of period blood (about 3 teaspoons, orlight flow), but they are alsoincredibly comfortable, making them a great choice for long workouts. They also featureseveral deep pocketswhere you can store small items if you’re on a long bike ride or run.
We think this is a great option for people who want to wear cozy athleisure towards the end of their period or as bonus protection with other menstrual options.
This isn’t the best option for a heavy flow.
Best for SleepThinx Period Pajama Sleep ShortsPHOTO: Thinx$50 at AmazonView on Thinx.comProsSuper absorbentComfortableCute designConsSmall amount of gusset transferKey Specs:Absorbency:Super |Material:Modal, cotton, polyester, elastane |Fit:Short with built-in bikini underwear |Sizes:XS - 4X |Care Instructions:Hand wash or machine wash cold, delicate, hang dryWhy We Recommend ItDue to theirdependable absorbencyandamazing comfort, you’ll get a great night’s sleep inThinx Period Pajama Sleep Shorts. The shorts featurebuilt-in underwearwith anabsorbent gusset, but they look like a normal pair of pajama shorts from the outside. They were super absorbent during testing. These shortsheld five tampons, or 8 teaspoons, of liquid in our testing.Comfort is also a key feature. They were heavy and thick. Thegusset felt akin to terrycloth, and the shorts were nice and soft. We liked that the padding went up fairly high up the back and front. The pockets and buttons also add a stylish flair. We also think these would be great items for postpartum use.Keep in MindThere was a little bit of fluid transfer on the gusset, but the exterior remained completely dry.PHOTO: Verywell Health / Jhett ThompsonPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia AlmeidaPHOTO: Verywell Health / Leticia Almeida
Best for SleepThinx Period Pajama Sleep ShortsPHOTO: Thinx$50 at AmazonView on Thinx.com
Best for SleepThinx Period Pajama Sleep Shorts
Best for Sleep
Thinx Period Pajama Sleep Shorts
PHOTO: Thinx
$50 at AmazonView on Thinx.com
ProsSuper absorbentComfortableCute designConsSmall amount of gusset transfer
ProsSuper absorbentComfortableCute design
Super absorbent
Comfortable
Cute design
ConsSmall amount of gusset transfer
Small amount of gusset transfer
Absorbency:Super |Material:Modal, cotton, polyester, elastane |Fit:Short with built-in bikini underwear |Sizes:XS - 4X |Care Instructions:Hand wash or machine wash cold, delicate, hang dry
Due to theirdependable absorbencyandamazing comfort, you’ll get a great night’s sleep inThinx Period Pajama Sleep Shorts. The shorts featurebuilt-in underwearwith anabsorbent gusset, but they look like a normal pair of pajama shorts from the outside. They were super absorbent during testing. These shortsheld five tampons, or 8 teaspoons, of liquid in our testing.
Comfort is also a key feature. They were heavy and thick. Thegusset felt akin to terrycloth, and the shorts were nice and soft. We liked that the padding went up fairly high up the back and front. The pockets and buttons also add a stylish flair. We also think these would be great items for postpartum use.
There was a little bit of fluid transfer on the gusset, but the exterior remained completely dry.
How We Tested the Best Period UnderwearAfter consulting gynecologists, we tested 46 pairs of period underwear in theVerywell Health Labbased on the following criteria:Absorbency:We poured the maximum advertised amount of liquid onto the gusset. We noted how well the underwear absorbed the liquid and then conducted a test to see if the liquid leaked or transferred.Durability:We washed each pair of underwear according to instructions with mild, unscented, dye-free detergent. We noted staining, residual odor, and the overall state of the underwear after washing.Comfort:We assessed whether the gusset felt overly wet, how the fabric felt against our skin, and any discomfort we felt due to seams or other design issues.Value:Lastly, we didn’t view the prices until after the other attributes had been assessed to maintain an unbiased view of each pair of underwear. Once we did, we compared the underwear’s performance to its price point to see if its value matched its price point.What to Look for in Period UnderwearFit and comfort:Period underwear comes in various styles, from boy shorts to thongs to bikini styles. You’ll get the most bang for your buck if you consider what style you prefer. Regardless of your preferred style, Tanouye notes that snug-fitting period underwear is best since it decreases leaks.Lifestyle:Consider your typical daily activities. Period underwear that is designed to absorb heavy flow during a long workout or jog might be overkill if you have a light flow and aren’t moving around a lot during the day.Our ExpertsOur period underwear testing was conducted in the Verywell Lab, with over 46 products under review. We consulted with several gynecologists, healthcare providers, and experts, including:Adi Katz, MD, FACOG, director of gynecology and director of the obstetrics and gynecology residency program at Lenox Hill HospitalSusan S. Khalil, MD, director of the Division of Sexual Health in Obstetrics, Gynecology, and Reproductive Science at the Icahn School of Medicine at Mount SinaiLeena Nathan, MD, an OBGYN in Westlake Village, CaliforniaStaci Tanouye, MD, FACOG, an OBGYN who works in private practice in Jacksonville, FloridaNicole Williams, MD, a gynecologic surgeon based in ChicagoWhy Trust Verywell HealthNicole Crawfordis a long-time writer and editor, as well as a prenatal and postpartum birth doula, yoga instructor, and avid runner based in Maryland. She received her master’s degree in 2008 and specializes in women’s health, prenatal and postpartum fitness, and nutrition for busy families.
How We Tested the Best Period Underwear
After consulting gynecologists, we tested 46 pairs of period underwear in theVerywell Health Labbased on the following criteria:
What to Look for in Period Underwear
Our Experts
Our period underwear testing was conducted in the Verywell Lab, with over 46 products under review. We consulted with several gynecologists, healthcare providers, and experts, including:
Why Trust Verywell Health
Nicole Crawfordis a long-time writer and editor, as well as a prenatal and postpartum birth doula, yoga instructor, and avid runner based in Maryland. She received her master’s degree in 2008 and specializes in women’s health, prenatal and postpartum fitness, and nutrition for busy families.
1 SourceVerywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read oureditorial processto learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.National Institute of Environmental Health Sciences.Perfluoroalkyl and polyfluoroalkyl substances (PFAS).
1 Source
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read oureditorial processto learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.National Institute of Environmental Health Sciences.Perfluoroalkyl and polyfluoroalkyl substances (PFAS).
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read oureditorial processto learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
National Institute of Environmental Health Sciences.Perfluoroalkyl and polyfluoroalkyl substances (PFAS).
Meet Our Medical Expert Board
Share Feedback
Was this page helpful?Thanks for your feedback!What is your feedback?OtherHelpfulReport an ErrorSubmit
Was this page helpful?
Thanks for your feedback!
What is your feedback?OtherHelpfulReport an ErrorSubmit
What is your feedback?
