Three women wearing Fri Period underwear Three women wearing Fri Period underwear

THE COMFIEST, NON-TOXIC

Period Underwear

Excellent 4.9 | 1000+ Happy Periods

'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.

Non-toxic

OEKO-TEX certified fabrics

Icon showing Fri Period underwear's triple layer tech

Leak-proof

Holds 3+ tampons worth

Icon showing Fri Period underwear is eco friendly

Kinder

To your body & the planet

Non-toxic

OEKO-TEX certified fabrics

Icon showing Fri Period underwear's triple layer tech

Leak-proof

Holds 3+ tampons worth

Icon showing Fri Period underwear is eco friendly

Kinder

To your body & the planet

New to period underwear?

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Buying 4 or MOre?

20% OFF & FREE SHIPPING

Mix & match styles. Discount applied automatically at checkout.

Impact that goes beyond a comfier period

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A tree is planted for every order

Each pair prevents 100's of tampons/pads from landfill

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No plastic packaging (our bags are 100% biodegradable)

Two brown bottles with hazardous material labels featuring warning symbols.

We avoid toxic chemicals that impact your health & hormones

Your Period Must-Haves

Woman wearing period underwear

Classic Period Brief

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Meet our

Period Boxers

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Waterproof 2L washbag - Fri Period
Waterproof

Wet Bag

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Meet our

Period Hipsters

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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.