Your Comfiest Period Ever
Excellent 4.9 | 1000+ Happy Periods
Non-toxic comfort
OEKO-TEX certified fabrics
Leak-proof confidence
Holds 3+ tampons worth
Aussie owned
Ships direct from Aus
Non-toxic comfort
OEKO-TEX certified fabrics
Leak-proof confidence
Holds 3+ tampons worth
Aussie owned
Ships direct from Aus
Money-Back Guarantee
1000+ happy customers can't be wrong. But just in case you're not completely satisfied with your purchase, we've got your back.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Buying 4 or MOre?
FREE SHIPPING & 20% OFF!
FREE SHIPPING & 20% OFF!
Mix & match styles to suit your flow. Discount applied automatically at checkout.
Choose Better for the Planet
No Waste
Reusable for 2+ years
One Tree
Planted For Every Order
Eco
Compostable packaging
No Waste
Reusable for 2+ years
One Tree
Planted For Every Order
Eco
Compostable packaging
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. Just 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 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. 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.