The Swim. Bikini
The Swim. Bikini
The Swim. Bikini
The Swim. Bikini

The Swim. Bikini

Regular price $32.00

Built for swimming, absorbs 2 tampons worth of blood, perfect for pool and beach days. 

Hello!! I am the Period. Swim Bikini!!! I do everything a normal great bikini does: I look good, and I’m soft and comfy, but I have two major differences. 1) I absorb period blood 2) while swimming. Whoah! I know that sounds pretty impressive. Here’s how it works. You slip me on, as you would regular swim bottoms, then head to the beach, the pool, or the lake. While you’re swimming, an incredibly sophisticated operation is going on: I am absorbing all your period blood on the inside of the underwear, while keeping out the water on the outside, so you don’t have that baggy feeling. Imagine never leaking again on the beach, imagine never leaving the pool to change your tampon, imagine never ever having to worry about coming out of the pool or the ocean with a tampon string hanging out - you know that moment - well it’s over. Stop imagining and start realizing! Period. Swim is here. The only problem you’ll have with me is working out what bikini top will go well with me. Here’s a hint: all of them. 

Have more questions about Period. Swim? Click here to read our FAQ's. 

This style runs true to size. Order your most standard size. 

You can see our size chart here.

You can see the length of the absorbent panel here.

Our Fabrics

Main: 80% Recycled Nylon, 20% Spandex

Absorbent Layer: 100% Polyester  

Leak Proof Layer: 100% Polyester PUL


None, zero, nada, zilch. We are proud to be one of the few period underwear brands that do not use any toxins in our products because who wants chemicals near the most sensitive part of their body? Not us. Or you.

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.

Give your Period. a quick rinse after leaving the water.

Hand wash cold with a mild detergent. 

 Hang dry. Do not bleach or dry clean.   

Each pair of Period. swimwear can hold up to 2 tampons worth of blood.

How long will one pair of Period. swimwear last?

You can swim as long as you want. Period blood really doesn’t come out in the water because of the water pressure. But you do flow on the beach, by the pool, the lake etc… That’s what Period Swim absorbs. One pair can hold up two tampons worth of blood.

Have more questions?

Check out our Swim FAQ's here (scroll to bottom of page).

Personal message from soil: I know it’s highly unusual to get a message from soil but in this case, I just had to say thank you. Just by using one pair of Period underwear, you’re saving the natural world from 9 tampons or 4 pads being thrown away and (because they don’t biodegrade) polluting the Earth for generations. From me and all my microbes - thank you.