SHOP OUR NEW SOFT FIT DISC: MADE WITH CLOUD-LIKE SILICONE FOR ALL-DAY COMFORT

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!

Ordering Made Easy

Clean period and body care, delivered to your door.

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One-Time Buy
Choose what you need and check out. No subscription required.

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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.

Hear From Our Cora Community

I have never felt so clean. Pads + period underwear has me so comfortable I almost forget I'm on my period. Life changing.

EA

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.

Elisa

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.

Jennifer W

Frequently Asked Questions

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. 

What people are saying

Cora’s got you covered, however you flow.

Check out our other goods.

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.

Size Guide

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.

SizeWaistHipUS Size
XS24" - 25"
35" - 36"
0-2
S26" - 27"
37" - 38"
2-4
M28" - 29"
39" - 40"
6-8
L30" - 31.5"
41" - 42.5"
10-12
XL32" - 33.5"
43" - 44.5"
14-16
XXL34" - 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.

From Day-to-Night

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

Read More at Blood & Milk

Blood + Milk is a community and resource for the awakening woman.