Resolutions don’t last, but periods do. 20% off sitewide with code: CARPEDIEM

The Free-To-Flow Period Sleep Short

Includes a mesh laundry bag for easy care.

Sleep through a storm—or a flood. Our full-coverage sleep shorts offer up to 10 hours of leak protection (6 regular tampons worth of blood) with no digging, bunching, or sticky pad winging.

Ordering Made Easy

Clean period and body care, delivered to your door.


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


Subscribe & Save
Sign up for a subscription and get your goods delivered at a discount. Cancel anytime.


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

Comfortable and they work. Also nice under a dress to provide coverage and avoid chafing, all while not worrying about leaking.


The sleep shorts are a total life-saver. So comfy and did not leak at all!!


I would definitely purchase again, they are very comfortable!


Frequently Asked Questions

How much blood do your sleep shorts absorb?

Our Sleep Shorts absorb about 71 mL (roughly the amount held by 6-10 regular tampons) of blood. However, absorption is affected by many things, including your menstrual flow, position (sitting, standing, moving) and activity.

Can this be used for incontinence?

Our Sleep Shorts are designed specifically for periods and haven't been tested for use with light bladder leaks or incontinence. We are considering underwear for incontinence in the future, so stay tuned.

Do they shrink?

If cared for as directed, your underwear will not shrink. We suggest rinsing in cold water, machine washing on the cold/delicate cycle, and line drying or laying flat.

I have heard that some garments and textiles contain PFAS. Does your underwear contain PFAS?

No, our underwear does not contain PFAs. Our underwear materials are certified Standard 100 by OEKO TEX (TM), an international association that ensures a high level of safety from harmful substances in textile products. There are many different types of PFAS (Per- and polyfluoroalkyl substances).
OEKO-TEX tests for the most common PFAS in textiles as part of their certification process. In addition, Cora tests each lot of Period Underwear in the USA with a 3rd party lab to ensure compliance.
Learn more about Oeko Tex here. To reference the limit values and specific PFAS covered under the Standard 100 OEKO-TEX testing, see page 25, annex 4.

What people are saying

Cora’s got you covered, however you flow.

Check out our other goods.

Get To Know Your Sleep Shorts

Size Guide

Our sleep short is a high-waisted style, if you're unsure between two sizes, we recommend sizing up, or contact us if you need help.

SizeWaistHipUS Size
XS24" - 25"
35" - 36"
S26" - 27"
37" - 38"
M28" - 29"
39" - 40"
L30" - 31.5"
41" - 42.5"
XL32" - 33.5"
43" - 44.5"
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

When your period sleeps over. And stays for breakfast.

Soft, reusable sleep shorts that are easy to wash, cycle after cycle.

From Day-to-Night


  • 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


  • Holds up to 6 tampons while you catch some zzz's 
  • High-waisted fit
  • Up to 10 hours of leak protection
  • For heavy nights

Dream on, bleed on.

Better for periods, and the planet.