Leak-free, super-absorbent, designed to withstand ultra-movement and sweat. Absorbs 8 to 10 tampons worth!
Your favorite bikini can now do a marathon, a spin class, a barre class, you name it! Or I’m just great for a busy day of running around. I’m currently the world champion in being waste-free and super-absorbent.
The Sporty. Bikini is made from our PeriodTech™ fabric - a super stretchy Nylon and Spandex knit that moves with you. As always, the gusset is made with organic cotton.
When To Wear: doing a marathon, going to the supermarket, and everything in between.
Trying to do period math? Click hereto work out how many pairs you need for your period according to your Flow Threshold.
This style runs true to size. Order your most standard size.
Our fabrics have been rigorously tested by a third-party company to ensure we are compliant with industry standards and best practices. We are proud to use fabric that is free of PFAS toxins. You can read more about product safety here.
How to take care of your Period.
Rinse for a few seconds.
Either hand wash and hang dry, or add to the laundry pile.
Regular wash, no bleach.
Tumble dry low or hang dry.
Do not dry clean.
Each pair of Period. underwear can hold up to 10 tbls, or 8-10 tampons, worth of blood.
You can see the length of the absorbent panel here.
How long will one pair of Period. last?
Everybody periods differently so it’s tough to be exact. Our average time is about 8 hours on a heavier flow day. Though some customers need to change after 3 to 4 hours, and others can go up to 14 hours (lucky them!). As your period gets lighter, one pair can take you through the day and night (just like regular underwear). But again, everybody Periods differently, so you need to take one cycle to figure out exactly how often you need to change. Start with a conservative estimate on your heavy days, and check in on your Period underwear after 4 hours. If you still feel good, give it another hour. Keep going until you figure out your limit. Here at Period, we find we need between 3 to 4 pairs on the first two heavy days, including evenings. And if you leak, please forgive us! Just this once. (Remember how many tampons you have forgiven). Treat the ‘leak’ as a gift and note the hour of your leakage. That is the best indicator of your ‘flow threshold’ how long the underwear will last for you.
Message from a Cheetah: Hi! You know me. You know how much I love to run. Running is the best thing in the universe. The only that ruins it is when you run past a decomposing tampon or pad. Man, that sucks. There are some things you can't unsee and that's one of them. But not for much longer! With incredible people like you, we're going to end all this ridiculous waste and make my runs fantastic again. Kudos.