1 Tree Planted For Every Pair
Women-Owned
Secure Payment
Hassle-Free Returns
1 Tree Planted For Every Pair
Women-Owned
Secure Payment
Hassle-Free Returns

1 Tree Planted For Every Pair
Women-Owned
Secure Payment
Hassle-Free Returns
1 Tree Planted For Every Pair
Women-Owned
Secure Payment
Hassle-Free Returns

1 Tree Planted For Every Pair
Women-Owned
Secure Payment
Hassle-Free Returns

1 Tree Planted For Every Pair
Women-Owned
Secure Payment
Hassle-Free Returns

Suitable For Light-Heavy Flows

Free Shipping When You Buy 4

Size —

Size chart

Size Chart

For more detailed sizing and measuring help, visit click here.

Size	US Dress Size	Aus Dress Size	Waist Circumference (inches)	Hip Circumference (inches)
XS	0	4	24-26	33-36
S	2-4	6-8	26-29	37-39
M	6-8	10-12	30-32	39-41
L	10-12	14-16	32-35	42-45
XL	12-14	16-18	36-39	46-48
XXL	14-16	18-20	39-43	48-51
XXXL	18-20	22-24	43-57	51-55

2XL

3XL

$29.00

Shipping calculated at checkout.

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Ethically made with PFAS-free material for your comfort & safety.

Here are the full details:

Lining: 95% organic cotton, 5% spandex | Outer Layer: 95% natural bamboo, 5% spandex | Inner Core: 80% polyester, 20% nylon with breathable PUL.

For more information about our fabric choices, click here.

After wearing, rinse in cool water until it runs clear, then machine wash at a low temperature.

Don't use softener or bleach. Hang or lay flat to dry. Discover our best tips and hacks here.

We offer a 30-day hassle-free return policy from the date you receive your order.

For first-time customers, we also offer a free size exchange - because we get that online sizing can be tricky.

To start a return or request an exchange, drop us a line at hello@friperiod.com with your order number, the item(s) you’d like to return or exchange, and why - your feedback helps us do better.

Supply chain transparency means knowing exactly where our products come from and how they’re made, giving you peace of mind with your purchase.

At Fri Period, we believe that ethical production and responsible sourcing are a non-negotiable, ensuring that each pair of period underwear aligns with our commitment to sustainability and social impact.

We partner with a factory in China that meets the highest standards of testing and certification.

This factory is committed not only to quality, sustainable and ethical production, but also to supporting menstrual equity, actively working to reduce period poverty.

Each pair of Fri Period underwear is made with care, in a certified facility that shares our values of transparency and fair labor practices.

New to period underwear? You probably have questions! We've answered the most popular ones right here.

Still unsure? Reach out to us at hello@friperiod.com and we will get back to you as soon as we can! 🩷

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5 Star Reviews

Thousands of happy periods

Your Best Period Underwear

Name: Classic Period Brief
Availability: InStock
Rating: 4.86 (7 reviews)

The go-to choice for anyone wanting ultra-soft, eco-friendly period panties that actually work. Crafted from breathable organic cotton and bamboo fabric, they feel amazing while keeping you dry, fresh, and comfy all day (& night!) long.

Our period briefs are designed for maximum absorbency and ultimate comfort — ideal for everyday wear and those moments where you need to feel like the best version of yourself.

Designed with your flow and lifestyle in mind, the Classic Brief is a game-changer in menstrual care. Whether you’re lounging at home, running errands, or powering through a busy work day, these briefs have got your back (& your front).

You'll Love Classic Period Briefs Because

Leakproof Protection: Multi-layer technology keeps moisture in check even on heavy flow days. Each pair does the work of 3 regular tampons or pads.
Sustainable Comfort: Made from the softest organic cotton and bamboo, these are better for your skin and the planet!
Reusable & Washable: These everyday underwear essentials are so easy to care for. Simply wear, wash, repeat!

This is comfort you’ll want to live in, not just during your period.

Shop now and experience your most comfortable cycle yet with our hardworking, super comfy & breathable undies.

Breathable fabric ensures your comfort

Printed gusset eliminates stain stress

Icon showing Fri Period underwear is made without using PFAS

Made without using PFAS or other nasties

Moderate to heavy flow

Machine washable

You may also love

The Fri Period Classic Brief is super comfortable and reliable! The fit feels just like regular underwear but with amazing leak protection. I love how soft and breathable the fabric is, and it keeps me feeling secure all day without any bulk. Perfect for everyday wear during my cycle.

NGL, Best priod pants i ever own!
This material is super comfortable and smooth to skin. I sometimes having issue with my delicate zone feel ichy when I using period pants too long. but with friperiod I didn't get that feeling even I was wearing more than 8 hours. and really appriciate they use
different material inside and outside.

Amazing quality and confidence!

I was initially nervous about leakage but the quality and fabric technology completely exceeded my expectations. The leak-proof protection worked perfectly, even on heavier days.

The classic briefs are incredibly comfortable and breathable. They fit well, offering full coverage without feeling bulky. I’ll definitely be buying several more pairs to keep me feeling confident and supported throughout my period.

Classic brief (strongly recommend!)

I've tried several brands of period underwear, but this one really stood out. The coverage was noticeably better, offering more security—especially on heavier days. The fabric felt like higher quality compared to others I've used, soft yet durable, and it held up well after washing. Most importantly, I felt more confident wearing this brand when I needed to leave the house during my period. It offered reliable protection without sacrificing comfort or style. Overall, it was a very positive experience!

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Classic Period Brief

Size Chart

Your Best Period Underwear

You'll Love Classic Period Briefs Because

Customer Reviews