Period Underwear Australia - Fri Period

Period Underwear Australia

Clean. Comfy. Leakproof.

OEKO-TEX certified fabrics

Holds 3+ tampons worth

Reusable for 2+ years

OEKO-TEX certified fabrics

Holds 3+ tampons worth

Reusable for 2+ years

  • Bundle & SAVE up to 22%

  • Get a FREE GIFT when you buy 6

  • Mix & match to suit your flow

  • Bundle & SAVE up to 22%

  • Get a FREE GIFT when you buy 6

  • Mix & match to suit your flow

  • Bundle & SAVE up to 22%

  • Get a FREE GIFT when you buy 6

  • Mix & match to suit your flow

  • Bundle & SAVE up to 22%

  • Get a FREE GIFT when you buy 6

  • Mix & match to suit your flow

  • Bundle & SAVE up to 22%

  • Get a FREE GIFT when you buy 6

  • Mix & match to suit your flow

  • Bundle & SAVE up to 22%

  • Get a FREE GIFT when you buy 6

  • Mix & match to suit your flow

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 Close-up of Fri Period's printed gusset. 🚨 CLEARANCE - Period Boxers 1.0 - Fri Period 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

⭐️ ⭐️ ⭐️ ⭐️ ⭐️
Suitable for all flows

Period Boxers - Fri Period Period Boxers - Fri Period 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 Close-up of Fri Period's printed gusset. 🚨 CLEARANCE - Period Boxers 1.0 - Fri Period Period Boxers - Fri Period 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

⭐️ ⭐️ ⭐️ ⭐️ ⭐️
Moderate-heavy flow

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. Product packaging for 'fri PERIOD' with biodegradable and compostable text on a light blue background Period Hipsters - Fri Period Period Hipsters - Fri Period Low - Rise Hipster - Fri Period Low - Rise Hipster - Fri Period Low - Rise Hipster - Fri Period
Period Hipsters

$27.00

⭐️ ⭐️ ⭐️ ⭐️ ⭐️
Light to moderate flow

As Seen In

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Woman wearing a white sweatshirt and Fri Period underwear against a white wall.
Person taking a mirror selfie wearing Fri Period's Low-rise Period Hipsters
Person wearing a patterned shirt and Fri Period boxer briefs, standing in a room with a chair and plant.
Person wearing a leopard print shirt and Fri Period Boxers indoors.
Woman wearing a white sweatshirt and Fri Period underwear against a white wall.
Person taking a mirror selfie wearing Fri Period's Low-rise Period Hipsters
18 shield check

A Better Period. Guaranteed.

We're confident you'll love Fri Period underwear (over 1000 happy customers can't be wrong!). And you are backed by our 30-day hassle-free returns policy.

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

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

Care for your underwear

Shop our range of accessories designed to help extend the life of your period underwear

Shop Period Accessories →
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

Your BFF for post-wear logistics

SHOP NOW →

Strucket Mini - Period Underwear Wash & Soak System - Fri Period Strucket Mini - Period Underwear Wash & Soak System - Fri Period Strucket Mini - Period Underwear Wash & Soak System - Fri Period Strucket Mini - Period Underwear Wash & Soak System - Fri Period Strucket Mini - Period Underwear Wash & Soak System - Fri Period
Strucket Mini

$36.95

No-fuss soaking solution

SHOP NOW →

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

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

Looking for the comfiest, most sustainable period underwear in Australia? You’re in the right place. At Fri Period, we’re rewriting the rules on how periods should feel — no more scratchy pads, no more landfill guilt. It's time for period underwear Australia! We're talking buttery-soft organic cotton and sustainably sourced bamboo viscose blends, made to move with you while keeping you protected with leak-proof technology. Designed here in Australia, our period undies and period briefs prove comfort, sustainability, and style can all fit in one pair.

Every pair you see here is made free from harmful chemicals, reusable, and made to last. Whether it’s light flow days, heavy days, or overnight, Fri Period has you covered with styles like our Classic Briefs, Low-Rise Hipsters, and Boxer Briefs (perfect for overnight period underwear!).

Shop our period underwear confidently knowing you’re choosing:

  • Planet-friendly materials: organic cotton & bamboo that’s breathable, moisture-wicking, and gentle on skin.
  • Leak-proof protection: triple-layer, leak-resistant material without the bulk.
  • All-day comfort: soft, stretchy fits that feel like your favourite everyday undies.

Want to learn more about why bamboo makes such a difference? Check out our blogs:

✨ Bamboo Clothing & Underwear for Your Period in Australia
✨ Bamboo Underwear Benefits

Switching to leak-proof underwear isn’t just about ditching disposables, it’s about choosing a healthier, more sustainable way to care for your body. Every pair you buy from Fri Period replaces hundreds of pads or tampons over its lifetime, reducing wear and tear on the planet and keeping waste out of landfills. Each style is designed to be suitabel for every stage of your menstrual flow. Plus, for every pair bought - we plant a tree and remove one bottle's worth of plastic from the sea. What's not to love?!

Caring for them is easy too — just rinse in cool water, use a cold wash or cold water cycle (you can pop them in a mesh laundry bag or delicates bag if you want but it's not necessary), and they’ll keep performing. The anti-microbial layer and leak-resistant layers keep you fresh and confident day after day, month after month (and year after year!).

And yes — we even offer a risk-free trial so you can find your perfect fit without the stress. If you're not happy with the size or fit of your period underwear, we'll send you a replacement free of charge. Whether you’re shopping for everyday comfort or anti-chafe underwear for workouts, you’ll find your match here.

Your period. Your way.
Shop Fri Period — Period Underwear Australia.