The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows
The Bikini Period. in Organic Cotton For Heavy Flows

The Bikini Period. in Organic Cotton For Heavy Flows

4.5
Rated 4.5 out of 5 stars
887 Reviews
$14.98
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1 pair absorbs 9 tampons of flow

Super absorbent, sleek style made for heavy days. 

Absorbs up to 9 tampons worth of flow!

Yup. I’m for those days when your period has your foot down on the flow pedal. I have a little less fabric than the high-waisted, but with the same four-layer towel system I have just as much absorbency. My padding is designed to take whatever the flow throws, while making you feel extra secure and safe. Oh, did I also mention how cozy and comfy I am? Anything a tampon or pad can do, I can do so much better. 

When to wear:  On your heaviest days. Also great for postpartum and perimenopause.

Trying to do period math? Click here to 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. 

You can see our size chart here.

Our Fabrics

Body: 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 9 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 an Octopus: Hi. I wanted to send you a personal message of gratitude for being conscious enough to stop using disposable products. Imagine me now, shaking your hand eight times. That’s what I’m doing. And sending you good energy with my two hearts. Tampons and pads take generations to biodegrade, cause endless pollution and they are frankly stupid inventions - and I should know what stupid is because I have eight brains. Be proud of yourself - you’re making a big change. 

4.5
Rated 4.5 out of 5 stars
Based on 887 reviews
92%would recommend this product
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How did your Period. fit compared to other underwear?Rated 0.1 on a scale of minus 2 to 2
How well did Period. absorb your flow? Rated 0.8 on a scale of minus 2 to 2
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887 reviews
  • JW
    Jamie W.
    Verified Buyer
    I recommend this product
    What size of underwear do you typically wear? S
    What size in Period. did you purchase? XS
    What do you use your Period. products for? Primary Period Protection, Overnight Protection
    Rated 5 out of 5 stars
    23 hours ago
    Love these!

    I bought my first pair five years ago, and now I'm buying another set since the first are less absorbent now. I've tried getting all my menstruating friends on this brand.

    How did your Period. fit compared to other underwear?Rated 0.0 on a scale of minus 2 to 2
    How well did Period. absorb your flow? Rated 0.0 on a scale of minus 2 to 2
    Was this helpful?
  • MM
    Maris M.
    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, Overnight Protection
    Rated 5 out of 5 stars
    1 week ago
    The Best Period Underwear!

    I needed period underwear that felt comfortable and was strong enough to last through the heavy parts of my cycle, and I found these! I am so happy with them that I am going to buy more! I highly recommend them to anyone who's trying period underwear for the first time and is worried it won't be high quality or comfortable enough. Buying more now!

    How did your Period. fit compared to other underwear?Rated 0.0 on a scale of minus 2 to 2
    How well did Period. absorb your flow? Rated 1.0 on a scale of minus 2 to 2
    Was this helpful?
  • SM
    Shelby M.
    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
    Rated 5 out of 5 stars
    1 week ago
    Game changer

    I love the two Period underwear pairs I've bought so far. It's such a relief to not be changing products all the time or worrying about leaks.

    How did your Period. fit compared to other underwear?Rated 0.0 on a scale of minus 2 to 2
    How well did Period. absorb your flow? Rated 2.0 on a scale of minus 2 to 2
    Was this helpful?
  • BB
    Bambi B.
    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? During Exercise , Light Bladder Leaks, Primary Period Protection, Overnight Protection
    Rated 5 out of 5 stars
    1 month ago
    Wish I had these years ago!

    I absolutely love my Period undies. They are comfortable and provide a sense of security and protection from leaks regardless the activity. Being very active while having sensitivity to material and clothing, I have found the perfect solution.

    How did your Period. fit compared to other underwear?Rated 0.0 on a scale of minus 2 to 2
    How well did Period. absorb your flow? Rated 1.0 on a scale of minus 2 to 2
    Was this helpful?
  • MB
    Michele B.
    Verified Buyer
    I recommend this product
    What size of underwear do you typically wear? M
    What size in Period. did you purchase? L
    What do you use your Period. products for? During Exercise , Period Backup, Everyday wear , Light Bladder Leaks
    Rated 4 out of 5 stars
    1 month ago
    Great underpants

    Like all Period underwear I feel totally confident, my clothes are protected, I am protected and comfortable.

    Just wish they were a little bit more bikini like, but then maybe I would not feel as confident wearing them for exercise, light bladder leaks, period backup etc.

    How did your Period. fit compared to other underwear?Rated 1.0 on a scale of minus 2 to 2
    How well did Period. absorb your flow? Rated 1.0 on a scale of minus 2 to 2
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