Organic Cotton & Bamboo Period Underwear
Non-toxic
OEKO-TEX certified fabrics
Leak-proof
Holds 3+ tampons worth
Kinder
To your body & the planet
Non-toxic
OEKO-TEX certified fabrics
Leak-proof
Holds 3+ tampons worth
Kinder
To your body & the planet
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
Say hello to organic period panties that are comfy, sustainable, and actually cute. At Fri Period, we’re ditching the waste (and the stigma) with reusable period underwear made from non-toxic fabrics like breathable organic cotton and bamboo viscose. Designed for all-day wear and all-night peace of mind, our period underwear gives you total confidence - made without PFAS, plastic or any other nasties. Our fabrics are OEKO-TEX Standard 100 certified and you can read more about our fabric selection here.
Whatever your body shape and size, and whether you're dealing with light spotting, moderate flow, or a heavy flow, there's a pair here to suit your cycle.
Not sure which pair is right for you? We've broken down how to choose the best PFAS-free underwear for your body and answered all your biggest questions about PFAS-free period care. Because feeling safe and supported during your period shouldn't be optional.
The fabrics used in our undies are OEKO-TEX Certified and tested for harmful chemicals, offering leakproof protection you can trust. Shop our award-winning range to find your perfect fit - whether you need a high-waisted style, cheeky bikini cut, or something for those ultra heavy flow days - and get ready to feel your comfiest, driest, and most eco-friendly self yet.
This is period underwear that supports your flow as well as your values. Our organic period panties are more than just a sustainable swap. They’re a full-on comfort upgrade. With a super-absorbent gusset featuring moisture-lock technology that traps menstrual fluid while staying breathable, you’ll wonder how you ever lived without them.
- Made with organic cotton & bamboo viscose - gentle on you and the planet
- Made without using PFAS - because harmful chemicals don’t belong in your knickers.
- Built with additional plant-based leakproof protection so your 100% confident and covered on light to heavy flow days (yup, even when you feel like Niagara Falls down there - we’ve got your back!).
Want to know more about the science behind our leakproof lining, absorbent core, and non-toxic fabrics? Check out this blog post on why PFAS-free period underwear matters.
These are not just reusable period products - they’re part of a more sustainable, planet-
friendly lifestyle. And yes, they’re designed to last. Learn how to care for them properly (hint: skip the bleach and the tumble dry!) and keep your undies in top shape. Ready to make the switch? Browse the collection above and experience the Fri Period difference for yourself. Your period just got a whole lot easier—and a whole lot comfier.