2026 Cycle Optimizer

Enter your details below for instant access to your ultimate period guide.

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

Logo for Bustle
Logo for Business Insider
Logo for Bustle
Logo for Business Insider
Logo for Bustle
Logo for Business Insider
Logo for Bustle
Logo for Business Insider

New to period underwear?

Read Our Latest Reviews

The absorption seemed super good. SUPER comfortable. I am so happy I gave these a try because so far they are making me a really happy customer.

Amber H., USA

I've tried several brands of period underwear, but this one stood out. The coverage was noticeably better—especially on heavier days. The fabric felt like higher quality compared to others I've used.

Havva T., Australia

I wanted a boxer style for overnight. These were the only brand I found that actually used cotton in the gusset, which was very important in my search. I absolutely LOVE these. I have been converted.

Michala Z., USA

For the first time in forever, I now have a reliable pair of period undies where I don’t need to have backup pads on hand. I can wear these with confidence all day long.

Frances B., USA

My period is pretty heavy and these did the job. They were comfortable and leak-free all day. Also really like wearing them at night as doesn’t “feel” like I’m wearing anything.

Noela B., Australia

The absorption seemed super good. SUPER comfortable. I am so happy I gave these a try because so far they are making me a really happy customer.

Amber H., USA

I've tried several brands of period underwear, but this one stood out. The coverage was noticeably better—especially on heavier days. The fabric felt like higher quality compared to others I've used.

Havva T., Australia

I wanted a boxer style for overnight. These were the only brand I found that actually used cotton in the gusset, which was very important in my search. I absolutely LOVE these. I have been converted.

Michala Z., USA

For the first time in forever, I now have a reliable pair of period undies where I don’t need to have backup pads on hand. I can wear these with confidence all day long.

Frances B., USA

My period is pretty heavy and these did the job. They were comfortable and leak-free all day. Also really like wearing them at night as doesn’t “feel” like I’m wearing anything.

Noela B., Australia

The absorption seemed super good. SUPER comfortable. I am so happy I gave these a try because so far they are making me a really happy customer.

Amber H., USA

I've tried several brands of period underwear, but this one stood out. The coverage was noticeably better—especially on heavier days. The fabric felt like higher quality compared to others I've used.

Havva T., Australia

I wanted a boxer style for overnight. These were the only brand I found that actually used cotton in the gusset, which was very important in my search. I absolutely LOVE these. I have been converted.

Michala Z., USA

For the first time in forever, I now have a reliable pair of period undies where I don’t need to have backup pads on hand. I can wear these with confidence all day long.

Frances B., USA

My period is pretty heavy and these did the job. They were comfortable and leak-free all day. Also really like wearing them at night as doesn’t “feel” like I’m wearing anything.

Noela B., Australia

The absorption seemed super good. SUPER comfortable. I am so happy I gave these a try because so far they are making me a really happy customer.

Amber H., USA

I've tried several brands of period underwear, but this one stood out. The coverage was noticeably better—especially on heavier days. The fabric felt like higher quality compared to others I've used.

Havva T., Australia

I wanted a boxer style for overnight. These were the only brand I found that actually used cotton in the gusset, which was very important in my search. I absolutely LOVE these. I have been converted.

Michala Z., USA

For the first time in forever, I now have a reliable pair of period undies where I don’t need to have backup pads on hand. I can wear these with confidence all day long.

Frances B., USA

My period is pretty heavy and these did the job. They were comfortable and leak-free all day. Also really like wearing them at night as doesn’t “feel” like I’m wearing anything.

Noela B., Australia

The absorption seemed super good. SUPER comfortable. I am so happy I gave these a try because so far they are making me a really happy customer.

Amber H., USA

I've tried several brands of period underwear, but this one stood out. The coverage was noticeably better—especially on heavier days. The fabric felt like higher quality compared to others I've used.

Havva T., Australia

I wanted a boxer style for overnight. These were the only brand I found that actually used cotton in the gusset, which was very important in my search. I absolutely LOVE these. I have been converted.

Michala Z., USA

For the first time in forever, I now have a reliable pair of period undies where I don’t need to have backup pads on hand. I can wear these with confidence all day long.

Frances B., USA

My period is pretty heavy and these did the job. They were comfortable and leak-free all day. Also really like wearing them at night as doesn’t “feel” like I’m wearing anything.

Noela B., Australia

The absorption seemed super good. SUPER comfortable. I am so happy I gave these a try because so far they are making me a really happy customer.

Amber H., USA

I've tried several brands of period underwear, but this one stood out. The coverage was noticeably better—especially on heavier days. The fabric felt like higher quality compared to others I've used.

Havva T., Australia

I wanted a boxer style for overnight. These were the only brand I found that actually used cotton in the gusset, which was very important in my search. I absolutely LOVE these. I have been converted.

Michala Z., USA

For the first time in forever, I now have a reliable pair of period undies where I don’t need to have backup pads on hand. I can wear these with confidence all day long.

Frances B., USA

My period is pretty heavy and these did the job. They were comfortable and leak-free all day. Also really like wearing them at night as doesn’t “feel” like I’m wearing anything.

Noela B., Australia

The absorption seemed super good. SUPER comfortable. I am so happy I gave these a try because so far they are making me a really happy customer.

Amber H., USA

I've tried several brands of period underwear, but this one stood out. The coverage was noticeably better—especially on heavier days. The fabric felt like higher quality compared to others I've used.

Havva T., Australia

I wanted a boxer style for overnight. These were the only brand I found that actually used cotton in the gusset, which was very important in my search. I absolutely LOVE these. I have been converted.

Michala Z., USA

For the first time in forever, I now have a reliable pair of period undies where I don’t need to have backup pads on hand. I can wear these with confidence all day long.

Frances B., USA

My period is pretty heavy and these did the job. They were comfortable and leak-free all day. Also really like wearing them at night as doesn’t “feel” like I’m wearing anything.

Noela B., Australia

The absorption seemed super good. SUPER comfortable. I am so happy I gave these a try because so far they are making me a really happy customer.

Amber H., USA

I've tried several brands of period underwear, but this one stood out. The coverage was noticeably better—especially on heavier days. The fabric felt like higher quality compared to others I've used.

Havva T., Australia

I wanted a boxer style for overnight. These were the only brand I found that actually used cotton in the gusset, which was very important in my search. I absolutely LOVE these. I have been converted.

Michala Z., USA

For the first time in forever, I now have a reliable pair of period undies where I don’t need to have backup pads on hand. I can wear these with confidence all day long.

Frances B., USA

My period is pretty heavy and these did the job. They were comfortable and leak-free all day. Also really like wearing them at night as doesn’t “feel” like I’m wearing anything.

Noela B., Australia

The absorption seemed super good. SUPER comfortable. I am so happy I gave these a try because so far they are making me a really happy customer.

Amber H., USA

I've tried several brands of period underwear, but this one stood out. The coverage was noticeably better—especially on heavier days. The fabric felt like higher quality compared to others I've used.

Havva T., Australia

I wanted a boxer style for overnight. These were the only brand I found that actually used cotton in the gusset, which was very important in my search. I absolutely LOVE these. I have been converted.

Michala Z., USA

For the first time in forever, I now have a reliable pair of period undies where I don’t need to have backup pads on hand. I can wear these with confidence all day long.

Frances B., USA

My period is pretty heavy and these did the job. They were comfortable and leak-free all day. Also really like wearing them at night as doesn’t “feel” like I’m wearing anything.

Noela B., Australia

The absorption seemed super good. SUPER comfortable. I am so happy I gave these a try because so far they are making me a really happy customer.

Amber H., USA

I've tried several brands of period underwear, but this one stood out. The coverage was noticeably better—especially on heavier days. The fabric felt like higher quality compared to others I've used.

Havva T., Australia

I wanted a boxer style for overnight. These were the only brand I found that actually used cotton in the gusset, which was very important in my search. I absolutely LOVE these. I have been converted.

Michala Z., USA

For the first time in forever, I now have a reliable pair of period undies where I don’t need to have backup pads on hand. I can wear these with confidence all day long.

Frances B., USA

My period is pretty heavy and these did the job. They were comfortable and leak-free all day. Also really like wearing them at night as doesn’t “feel” like I’m wearing anything.

Noela B., Australia

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.

Impact that goes beyond a comfier period

Person holding a small plant with soil in their hands

A tree is planted for every order

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

Stack of green plastic bottles on a black background

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