20% OFF & FREE SHIPPINGOn orders over $100

HASSLE-FREE RETURNS30 Days To Change Your Mind

ONE TREE PLANTEDFor Every Order

Three women wearing Fri Period underwear

Three women wearing Fri Period underwear

THE COMFIEST, NON-TOXIC

Period Underwear

Shop Bestsellers →

4.9 out of 5 | Loved by 1000+ customers

Award-Winning Period Underwear

Classic Period Brief - Fri Period

Classic Period Brief - Fri Period underwear - Suitable for women of all shapes and sizes

Classic Briefs

$29.00

Period Boxers - Fri Period

Period Boxers - Fri Period

Period Boxers

$34.00

Period Hipsters - Fri Period

Low - Rise Hipster - Fri Period

Low-Rise Hipsters

$27.00

Waterproof 2L washbag - Fri Period

Waterproof 2L washbag - Fri Period

Waterproof Wet Bag

$22.00

Made without PFAS or nasty chemicals

Icon showing Fri Period underwear's triple layer tech

Leak-proof, breathable & ultra absorbent

Icon showing Fri Period underwear is eco friendly

Ethically made & planet-friendly

Made without PFAS or nasty chemicals

Icon showing Fri Period underwear's triple layer tech

Leak-proof, breathable & ultra absorbent

Icon showing Fri Period underwear is eco friendly

Ethically made & planet-friendly

'Incredibly comfortable and breathable. The leak-proof protection worked perfectly.'

Alana, WA

'The quality of these are so much better than other period underwear brands.'

Grace, PA

'I have been wearing period pants from other brands for years but have never found any that are perfectly leakproof - until now!'

Clare, CA

'I am honestly blown away. Totally hassle free... these were SO comfortable and SO brilliant.'

Katie S.

Person wearing a patterned shirt and Fri Period boxer briefs, standing in a room with a chair and plant.

Person taking a mirror selfie wearing Fri Period's Low-rise Period Hipsters

Woman wearing a white sweatshirt and Fri Period underwear against a white wall.

Person wearing a leopard print shirt and Fri Period Boxers indoors.

Person wearing a patterned shirt and Fri Period boxer briefs, standing in a room with a chair and plant.

Person taking a mirror selfie wearing Fri Period's Low-rise Period Hipsters

Period Comfort You Can Count On

With 1000+ happy customers, we're confident you'll LOVE our products. But just in case, we have a hassle-free returns policy.

5 Star Reviews

Easy Returns

Secure Payment & Checkout

Woman wearing a white sweatshirt and Fri Period underwear against a white wall.

Person wearing a leopard print shirt and Fri Period Boxers indoors.

Choose Better for the Planet

No Waste

Reusable for 2+ years

One Tree

Planted For Every Order

Recycling symbol in teal on a white background

Eco

Compostable packaging

No Waste

Reusable for 2+ years

One Tree

Planted For Every Order

Recycling symbol in teal on a white background

Eco

Compostable packaging

The female founders of Fri Period underwear with a customer

Small Business, Big heart

Our Story

With 1.8 billion of us menstruating each month, we're on a mission to make periods better - for you, and for the planet.

Period Underwear For a Comfier & More Confident Period | Fri Period