Period Underwear
Feel dry, fresh, and confident—even on your heaviest days with our organic cotton period underwear.
Leaks, odors, and uncomfortable pads? Not anymore. The Classic Period Brief is your new favorite way to handle that time of the month—without stress. Designed to hold up to 3 tampons’ worth of flow, these super-comfy undies are made from breathable organic cotton and bamboo that feel soft, secure, and totally wearable all day (and night). No bulk, no weird stiffness, no constant checking for leaks.
Whether you're running errands or lounging at home, these thoughtfully designed briefs offer complete front-to-back coverage with multi-layer tech that locks in moisture and neutralizes odors. Plus, the stain-concealing gusset keeps things discreet. Just rinse, wash, and repeat.
Highlights
- Leakproof comfort for heavy flow days
- Feels like your favorite pair of underwear
- Holds 3 tampons' worth for all-day protection
- Stain-hiding gusset means no more stress
- Organic cotton and bamboo blend
- Reusable, washable, easy to care for
Product Specs
- Holds up to 3 tampons or pads worth
- PFAS-free and non-toxic materials
- Full-bum, high-waist design
- Machine washable, hang to dry
- Made in a certified ethical factory
- Breathable, soft, and extremely comfy
- Made with organic cotton & bamboo
- Printed gusset blends and conceals stains
- OEKO-TEX Standard 100
- BSCI
- SEDEX
What's Included
- 1x Classic Period Underwear
Shipping
For U.S. customers, shipping is a flat $5 or FREE when you buy 4 or more. Orders are processed within 1–2 business days.
Returns
If you're not happy with your Fri Period product, we'll do our best to make it right. We have a 30-day hassle-free returns policy. We also do a free size exchange for first time buyers.
FAQs
What materials are used?
The outer layer is a bamboo/spandex blend, the lining is organic cotton/spandex, and the absorbent core is a breathable polyester/nylon with PUL.
Are these safe and chemical-free?
Yes! These are made without PFAS or other harmful chemicals.
Will they feel bulky?
Not at all. They feel just like regular underwear, with soft, breathable fabric and no stiffness.
Can I wear these all day?
Yes, many users report wearing them for 8-12 hours comfortably—even on heavier days.
How do I wash them?
Rinse in cool water until it runs clear, then machine wash on low and air dry. No bleach or softener.
Do they help with odor?
Yes, the built-in moisture-wicking and odor control layers keep you feeling fresh throughout the day.
What if I have front-heavy bleeding?
These briefs provide extended front coverage to help prevent leaks, even if you tend to bleed toward the front.
Are they good for sleeping?
Absolutely! Their full coverage and leakproof design make them a great overnight option.
How much can one pair hold?
Each Classic Period Brief holds up to 3 regular tampons or pads worth of flow—ideal for moderate to heavy days.
How do I know my size?
Please see the size chart in the image gallery above. For more help with sizing, visit here: https://www.friperiod.com/pages/size-chart
Meet the Maker
Our Story
An Australian & an American on a Mission to Make Periods Cleaner, Comfier and More Sustiainable
We created Fri Period because we wanted something better—for ourselves, for our daughters, and for the planet. We loved the idea of period underwear but were frustrated by the lack of transparency, the use of toxic chemicals like PFAS, and the fact that they stained easily. We knew we could do better. Fri Period solves all of that: it’s ethically made, designed for real bodies, and features a printed gusset that helps eliminate “stain stress.” Since launching in 2023, we’ve helped thousands of people feel more comfortable, secure, and proud of their periods. Our goal is simple: to offer safe, sustainable period care that’s good for your body and kinder to the planet—because we all deserve better.