The Free-To-Flow Period Underwear
Includes a mesh laundry bag for easy care.
Soft, reusable period underwear that hold up to 3 regular tampons worth of liquid–cycle after cycle. Made without toxic chemicals, PFAS, or azo dyes.
We are currrently out of stock of certain underwear sizes and pack sizes, but we're happy to offer all sizes in a 1 pack! We're temporarily offering 50% off our 3 and 5 packs- get them while you can!
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Make Your Impact
With every purchase you make, Cora provides period products and body literacy resources to people who might otherwise go without.
Cycle After Cycle
Washable underwear that absorbs your period. Comfortable to wear during sleep, exercise or while cramping on the couch.
Hugs Your Body
Soft, breathable black cotton that stretches with your body.
Wicks liquid away to keep you dry and comfortable.
Back It Up
Depending on your flow, wear solo or as a backup to your tampon, cup or disc.
95% Cotton, 5% elastane (Outer Shell)
89% Polyester, 11% elastane (Outer Gusset)
91% Polyester, 9% elastane, TPE (Leak-resistant layer)
STANDARD 100 BY OEKO-TEX®
This product has been verified in an independent laboratory and tested for harmful substances according to STANDARD 100 by OEKO-TEX®, an international association that ensures a high-level of safety from harmful substances in textile products. #20.HUS.16322 (Hohenstein HTTI)
I have never felt so clean. Pads + period underwear has me so comfortable I almost forget I'm on my period. Life changing.
The fabric feels really soft and the style is super cute—it just looks like normal bikini underwear. I can barely feel it when I'm wearing it.
These are, hands down, the BEST I own. No other brand I have wicks away the moisture like these.I just came on here to order 5 more pairs.
How much blood does your Period Underwear absorb?
Our Period Underwear absorbs about 25 mL (roughly the amount held by 3-4 regular tampons) of menstrual fluid. However, absorption is affected by many things, including your menstrual flow, position (sitting, standing, moving), and activity.
We recommend you use Period Underwear in the way that works best for you, which might require some trial and error. Some women prefer to wear period underwear as a back-up to other period care products, like pads, tampons, liners, or cup.
When should I wear Period Underwear?
Our Period Underwear can be worn as a replacement for your standard underwear. The absorbent gusset in our underwear provides protection against leaks, similar to a pad or liner. You can choose to wear Period Underwear as back-up protection with other feminine care products (tampons, cup, pad, etc.) or wear the underwear alone. You can wear Period Underwear during the day, overnight, or while being active.
How can I switch to period underwear for the first time?
Period Underwear is a great addition to your period care routine. To start, we suggest you try it on a lighter flow day or as a back-up method for other period care products. Some women start by using period underwear as a replacement for a liner. Other women choose to use period underwear while sleeping (with pads) to provide additional leak-protection. Women with very irregular or unpredictable cycles might choose to wear period underwear daily!
How does the gusset in Period Underwear work?
Each pair of underwear has a “gusset” with a four-layer absorbent core designed to pull up to three tampons’ worth of liquid away from the body and create secure leak protection. On a pair of medium-sized period underwear, this gusset spans the panel of fabric between the legs and approximately 2.5” additional inches up the back. It's made from 91% polyester and 9% elastane. It's similar to fleece and highly absorbent.
Get To Know Your Period Underwear
When To Use
- Depending on your flow, wear solo or as a backup to your tampon, cup or disc.
- Comfortable and effective during sleep – for a restful night when you need it most.
- Coverage that’s flexible and moves with your body – to fit easily into your active lifestyle.
For more detailed information about Cora Period Underwear, please visit our Period Underwear Resource Page.
Since our underwear is a bikini style, we recommend basing your size on your hip measurements, which should be taken across the widest part of your hips/butt. If you're unsure between two sizes, we recommend sizing up, or contact us here if you need help.
|XS||24" - 25"||35" - 36"||0-2|
|S||26" - 27"||37" - 38"||2-4|
|M||28" - 29"||39" - 40"||6-8|
|L||30" - 31.5"||41" - 42.5"||10-12|
|XL||32" - 33.5"||43" - 44.5"||14-16|
|XXL||34" - 36"||45" - 47"||18-20|
How To Wash
Follow these steps to help your period underwear last without sacrificing comfort or absorbency.
- Rinse in cold water
- Machine wash on delicate cycle using your mesh laundry bag
- Line dry or lay flat
Good for Your Period. And the Planet.
Listen to what our Cora Community has to say about our Period Underwear.
DAY : BIKINI
- Holds up to 3 tampons while you do your daily activities
- Bikini style
- Perfect to pair with a cup, disc, or tampon
- For moderate days
NIGHT : SLEEP SHORT
- Holds up to 6 tampons while you catch some zzz's
- High-waisted fit
- Up to 10 hours of leak protection
- For heavy nights