Three women wearing fri period's pfas free period underwear

THE COMFIEST, NON-TOXIC

Period Underwear

Shop Top Rated →

4.9 out of 5 | 1000+ Customers

OEKO-TEX Certified Fabrics

Leakproof, Breathable & Comfy

Reusable For 2+ Years

OEKO-TEX Certified Fabrics

Leakproof, Breathable & Comfy

Reusable For 2+ Years

Classic Period Brief - Fri Period Person wearing black high-waisted underwear with text highlighting features on a light gray background Classic Period Brief - Fri Period Classic Period Brief - Fri Period Classic Period Brief - Fri Period Classic Period Brief - Fri Period Close-up of Fri Period's printed gusset. Product packaging for 'fri PERIOD' with biodegradable and compostable text on a light blue background Classic Period Brief - Fri Period Person placing a garment into a washing machine with text 'Easy to wash' and an arrow pointing to the open door. A review of Classic Period Brief - Fri Period - A customer shares her testimonial Review of Classic Period Brief - Fri Period
Classic Briefs

$29.00

⭐️ ⭐️ ⭐️ ⭐️ ⭐️
Our best seller for a reason!
Suitable for all flows

SHOP NOW →

Period Boxers - Fri Period Person wearing black period underwear with text about breathable, OEKO-TEX certified fabrics and absorption capacity. Classic Period Brief - Fri Period Person wearing black underwear lying on a white bed with text highlighting comfort and leak protection. Period Boxers - Fri Period Period Boxers - Fri Period Classic Period Brief - Fri Period Close-up of Fri Period's printed gusset. Period Boxers - Fri Period Product packaging for 'fri PERIOD' with biodegradable and compostable text on a light blue background Period Boxers - Fri Period Person placing a garment into a washing machine with text 'Easy to wash' and an arrow pointing to the open door. Period Boxers - Fri Period
Period Boxers

$34.00

⭐️ ⭐️ ⭐️ ⭐️ ⭐️
Your comfiest period ever!
Moderate-heavy flow

SHOP NOW →

Period Hipsters - Fri Period Period Hipsters - Fri Period Close-up of Fri Period's printed gusset. Classic Period Brief - Fri Period Period Hipsters - Fri Period Person placing a garment into a washing machine with text 'Easy to wash' and an arrow pointing to the open door. Classic Period Brief - Fri Period Product packaging for 'fri PERIOD' with biodegradable and compostable text on a light blue background Period Hipsters - Fri Period Low - Rise Hipster - Fri Period Low - Rise Hipster - Fri Period Low - Rise Hipster - Fri Period
Period Hipsters

$27.00

⭐️ ⭐️ ⭐️ ⭐️ ⭐️
Cute yet powerful!
Light-moderate flow

SHOP NOW →

Waterproof 2L washbag - Fri Period Waterproof 2L washbag - Fri Period Waterproof 2L washbag - Fri Period Waterproof 2L washbag - Fri Period
Waterproof Wet Bag

$22.00

⭐️ ⭐️ ⭐️ ⭐️ ⭐️
For easy care on-the-go

SHOP NOW →

As Seen In

Logo for Bustle
Logo
Logo
Logo
Logo for Business Insider

Katie S.

'Totally hassle free... these were SO comfortable and SO brilliant.'

Alana R.

'Incredibly comfortable and breathable.'

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.

Amanda W.

'Very comfortable and does a great job containing everything.'

Person wearing a patterned shirt and Fri Period boxer briefs, standing in a room with a chair and plant.
Woman's torso wearing Fri Period underwear

Fran S.

So comfy and amazing absorbency.

Katie S.

'Totally hassle free... these were SO comfortable and SO brilliant.'

Alana R.

'Incredibly comfortable and breathable.'

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.

Amanda W.

'Very comfortable and does a great job containing everything.'

Person wearing a patterned shirt and Fri Period boxer briefs, standing in a room with a chair and plant.
Woman's torso wearing Fri Period underwear

Fran S.

So comfy and amazing absorbency.

Katie S.

'Totally hassle free... these were SO comfortable and SO brilliant.'

Alana R.

'Incredibly comfortable and breathable.'

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.

Amanda W.

'Very comfortable and does a great job containing everything.'

Person wearing a patterned shirt and Fri Period boxer briefs, standing in a room with a chair and plant.
Woman's torso wearing Fri Period underwear

Fran S.

So comfy and amazing absorbency.

Katie S.

'Totally hassle free... these were SO comfortable and SO brilliant.'

Alana R.

'Incredibly comfortable and breathable.'

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.

Amanda W.

'Very comfortable and does a great job containing everything.'

Person wearing a patterned shirt and Fri Period boxer briefs, standing in a room with a chair and plant.
Woman's torso wearing Fri Period underwear

Fran S.

So comfy and amazing absorbency.

Easy Care

Follow these simple steps to keep your period underwear fresh for 2+ years

Rinse in cold water

After wearing, rinse your underwear in cold water until the water runs clear.

Machine wash cold

Wash on a low-temp cycle . Avoid fabric softener or bleach.

Hang dry

For best results, hang dry your underwear.

Person washing a garment under running water in a sink with soap visible.
Person loading a colorful garment into a white washing machine.
Black underwear hanging on a clothesline against a blue sky with clouds

Find Your Perfect Pair

Shop All
Black classic briefs with text about absorbency for all flow types on a light blue background Black period boxers with text about absorbency and coverage on a light blue background Product description card for 'Period Hipsters' with black underwear, flow information, and comparison to tampons and pads.
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.

Read More →