• Women Owned

  • FREE SHIPPING & 20% OFF when you buy 4+

  • Kinder to your body & the planet

  • Women Owned

  • FREE SHIPPING & 20% OFF when you buy 4+

  • Kinder to your body & the planet

  • Women Owned

  • FREE SHIPPING & 20% OFF when you buy 4+

  • Kinder to your body & the planet

  • Women Owned

  • FREE SHIPPING & 20% OFF when you buy 4+

  • Kinder to your body & the planet

  • Women Owned

  • FREE SHIPPING & 20% OFF when you buy 4+

  • Kinder to your body & the planet

  • Women Owned

  • FREE SHIPPING & 20% OFF when you buy 4+

  • Kinder to your body & the planet

You’re In! Now... Did You Win?

Check your inbox to see if you’ve scored a free Fri Period underwear!

Organic Cotton & Bamboo Period Underwear

Period underwear that's kinder to your body (& the planet!)

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

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Classic Period Brief

$29.00

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Period Boxers - Fri Period Period Boxers - Fri Period

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Period Boxers

$34.00

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Period Hipsters - Fri Period Low - Rise Hipster - Fri Period

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Period Hipsters

$27.00

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'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.'

Alana, WA

'The quality of these are so much better than other period underwear brands. They feel so much more comfortable and have more coverage. I highly recommend trying them.'

Grace, PA

'I’m so grateful to discover this brand! I have been wearing period pants from other brands for years but have never found any that are perfectly leakproof — until now!'

Clare, CA

Today is my first day of trying them and I am honestly blown away. Totally hassle free, not a whisper of a smell or a leak. these were SO comfortable and SO brilliant.

Katie S.

Leak-free comfort

No harmful chemicals

Icon showing Fri Period underwear is eco friendly

Planet friendly

Leak-free comfort

No harmful chemicals

Icon showing Fri Period underwear is eco friendly

Planet friendly

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Buying 4 or MOre?

FREE SHIPPING & 20% OFF!

Mix & match styles to suit your flow. Discount applied automatically at checkout.
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New to Period Underwear?

Fri Period underwear feels just like your regular (comfiest) underwear, but each pair does the work of several tampons or pads. Ethically made from natural, breathable fabrics, Fri Period will have you feeling fresh & confident (even on your heaviest flow days).

Click below for all the deets on how they work.

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"I feel comfortable and secure when I wear these, no matter how heavy my period is — and I haven’t had to contend with any leaks!"

Frances

Person taking a mirror selfie wearing a striped shirt and black underwear.

I am blown away by the comfort of this underwear. They don’t feel bulky like some other brands do, and they’re so much better (and more secure) than wearing pads! I’m spreading the word about this brand. They’re a lot less expensive than other brands I’ve tried which didn’t perform as well.

Clare

Person wearing Fri Period boxers

"They are so much more comfortable than pads and feel much more secure. I highly, highly recommend!"

Michala

Woman wearing Fri Period boxers

"I feel comfortable and secure when I wear these, no matter how heavy my period is — and I haven’t had to contend with any leaks!"

Frances

Person taking a mirror selfie wearing a striped shirt and black underwear.

I am blown away by the comfort of this underwear. They don’t feel bulky like some other brands do, and they’re so much better (and more secure) than wearing pads! I’m spreading the word about this brand. They’re a lot less expensive than other brands I’ve tried which didn’t perform as well.

Clare

Person wearing Fri Period boxers

"They are so much more comfortable than pads and feel much more secure. I highly, highly recommend!"

Michala

Woman wearing Fri Period boxers

"I feel comfortable and secure when I wear these, no matter how heavy my period is — and I haven’t had to contend with any leaks!"

Frances

Person taking a mirror selfie wearing a striped shirt and black underwear.

I am blown away by the comfort of this underwear. They don’t feel bulky like some other brands do, and they’re so much better (and more secure) than wearing pads! I’m spreading the word about this brand. They’re a lot less expensive than other brands I’ve tried which didn’t perform as well.

Clare

Person wearing Fri Period boxers

"They are so much more comfortable than pads and feel much more secure. I highly, highly recommend!"

Michala

Woman wearing Fri Period boxers

"I feel comfortable and secure when I wear these, no matter how heavy my period is — and I haven’t had to contend with any leaks!"

Frances

Person taking a mirror selfie wearing a striped shirt and black underwear.

I am blown away by the comfort of this underwear. They don’t feel bulky like some other brands do, and they’re so much better (and more secure) than wearing pads! I’m spreading the word about this brand. They’re a lot less expensive than other brands I’ve tried which didn’t perform as well.

Clare

Person wearing Fri Period boxers

"They are so much more comfortable than pads and feel much more secure. I highly, highly recommend!"

Michala

Woman wearing Fri Period boxers

"I feel comfortable and secure when I wear these, no matter how heavy my period is — and I haven’t had to contend with any leaks!"

Frances

Person taking a mirror selfie wearing a striped shirt and black underwear.

I am blown away by the comfort of this underwear. They don’t feel bulky like some other brands do, and they’re so much better (and more secure) than wearing pads! I’m spreading the word about this brand. They’re a lot less expensive than other brands I’ve tried which didn’t perform as well.

Clare

Person wearing Fri Period boxers

"They are so much more comfortable than pads and feel much more secure. I highly, highly recommend!"

Michala

Woman wearing Fri Period boxers