The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows
The Bikini Period. in Sporty Stretch For Heavy Flows

The Bikini Period. in Sporty Stretch For Heavy Flows

4.4
Rated 4.4 out of 5 stars
450 Reviews
Regular price $9.00
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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 here to work out how many pairs you need for your period according to your Flow Threshold.
Discounts are not applicable to this style.

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

You can see our size chart here.

Our Fabrics

Main: PeriodTech™ 85% Nylon with 15% Spandex Knit

Lining: 95% Organic Cotton with 5% Spandex Jersey

Absorbent Layer: 100% Polyester  

Leak Resistant Layer: 100% Polyester PUL

 

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.

Check out our absorbency test video here.

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.

4.4
Rated 4.4 out of 5 stars
Based on 450 reviews
Total 5 star reviews: 297 Total 4 star reviews: 76 Total 3 star reviews: 54 Total 2 star reviews: 19 Total 1 star reviews: 4
83%would recommend this product
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450 reviews
  • CH
    Charlene H.
    Verified Buyer
    I recommend this product
    What size of underwear do you typically wear? M
    What size in Period. did you purchase? M
    What do you use your Period. products for? Primary Period Protection
    Rated 5 out of 5 stars
    11 seconds ago
    Comfortable

    Very comfortable, great for heavy days

  • A
    Alex
    Verified Buyer
    I recommend this product
    What size of underwear do you typically wear? XS
    What size in Period. did you purchase? XS
    What do you use your Period. products for? Primary Period Protection, Overnight Protection , During Exercise
    Rated 5 out of 5 stars
    2 days ago
    Succeeded my Expectations!

    This is the first company that I went to for period underwear, and I’m very glad I did! The underwear is very affordable, comfortable, and absorbent. This pair of underwear lasted me about 12 hours on the first day of my period.

  • OS
    Oksana S.
    Verified Buyer
    I recommend this product
    What size of underwear do you typically wear? XL
    What size in Period. did you purchase? XL
    What do you use your Period. products for? Primary Period Protection
    Rated 5 out of 5 stars
    5 days ago
    Good for overseas

    I’ve bought few pairs to send it overseas where is my sister in law lives she is excited to use them as she never even heard of period underwear before and to buy disposable pads its very expensive there she was so happy with them

  • IR
    Isis R.
    Verified Buyer
    I recommend this product
    What size of underwear do you typically wear? L
    What size in Period. did you purchase? L
    What do you use your Period. products for? Overnight Protection , Period Backup
    Rated 4 out of 5 stars
    1 week ago
    Absorbent

    Absorbent and FRESH! I feel like other period underwear smell weird and STINK after use. They’re very comfortable however they don’t have full coverage of the back. So if you got a big booty these arent good for all day leak protection. I’ve been wearing mine with a menstrual cup and I’m very satisfied with that.

  • BM
    Barbara M.
    Verified Buyer
    I recommend this product
    What size of underwear do you typically wear? L
    What size in Period. did you purchase? L
    What do you use your Period. products for? Primary Period Protection
    Rated 5 out of 5 stars
    1 week ago
    ID BUY IT AGAIN AND AGAIN

    WOW did this style surprise me and it isn’t kidding when it says it can absorb 8-10 tampons. IT SURE CAN! I have a heavy flow. I have my period just for 3-4 days but it feels like Mt Rushmore so I did get the sleeper and extra coverage high waisted. I decided my second month of using these that I’d use the bikini first to see how it withstood and IT DID GREAT! I can wear something so simple and be fine! I can go to work for the day and come home and change. I’m glad I don’t have to wear something bulky to get the job done and love the extra coverage high waisted for when I go to bed and can be in any position I want to be in! Thank you!

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