
Period Underwear 101
New To Period Underwear?
Read on to learn all you need to know about how period underwear will revolutionize the way you manage your period!
How does it work?
Fri Period underwear feels just like regular underwear.
Wear them like you would your trustiest pair of cotton panties, and let it do the work of several tampons and pads.
Several layers of high-tech and non-toxic fabrics make up the gusset, which work together to wick away, trap & contain any fluid.
This means that you feel comfy & confident all day (or night) long!
No leaks. No smells. No Stress.


How do I use Fri Period underwear?
It's easy!
✅ Wear
✅ Wash
✅ Repeat!
Each pair does the work of up to 4 tampons or pads, so you can get on with your day stress-free!
They're so comfy, you might forget you're on your period!
How do I care for my Fri Period underwear?
It's easy! Simply rinse in cool water, wash in your machine at a low temperature, and then hang or lay flat to dry.
Avoid bleach or softener to extend the life of your period underwear.
What's in Fri Period underwear?
Fri Period underwear are ethically made without using PFAS or other chemical nasties.
Here are the full details:
Lining: 95% organic cotton, 5% spandex
Outer Layer: 95% natural bamboo, 5% spandex
Inner Core: 80% polyester, 20% nylon with breathable PUL.
All the comfort and confidence, but without the nasty chemicals.
Why Fri Period? Let's Compare
Here's how Fri Period underwear stacks up against other period products.
Environmental Impact
Reusable & each pair plants a tree
Single-use & takes up to 800 years to decompose
Single-use & takes up to 800 years to decompose
Made Without Toxic Nasties
Breathable organic cotton & bamboo
Many popular brands found to contain PFAS, lead and other nasties
Many popular brands found to contain PFAS, lead and other nasties
Plastic-Free
Cost
One upfront cost
Ongoing monthly spend
Ongoing monthly spend
Once you switch to Fri Period, you'll wonder why you ever put up with anything else.
Want to know why we started a period underwear company? Read our story here: