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
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

4.3
Rated 4.3 out of 5 stars
989 Reviews
$14.00
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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. 

4.3
Rated 4.3 out of 5 stars
Based on 989 reviews
Total 5 star reviews: 579 Total 4 star reviews: 211 Total 3 star reviews: 134 Total 2 star reviews: 56 Total 1 star reviews: 9
80%would recommend this product
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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989 reviews
  • L
    Lex
    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, Overnight Protection , Light Bladder Leaks, Period Backup, Everyday wear
    Rated 5 out of 5 stars
    21 seconds ago
    Great way to have a period more sustainably and with more comfort

    Pads are uncomfortable for me to wear most of the time. This saves me from that feeling.

    It's much appreciated!

    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?
  • JR
    Jamie R. C.
    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, Overnight Protection
    Rated 5 out of 5 stars
    2 days ago
    My daughter is loving them

    Purchased for my daughter, and she is loving them. She has always hated wearing pads and tampons. So these undies have been a game changer! They work great and are comfortable she says. Glad we decided to give them a try!

    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?
  • KB
    Kathryn B.
    Verified Buyer
    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 3 out of 5 stars
    6 days ago
    I had high hopes but they fail in one area

    After reading all the positive reviews on these I had really high hopes for them, but after 3 hours my blood leaked out the sides outside the absorbency layer and leaked out through to my jeans. Considering how many pads and tampons worth of blood these are supposed to hold, I'm very disappointed that I can't wear them with the confidence I thought I'd be able too. I thought perhaps it is because the absorbent gusset was too narrow for me. But no, I had the same issue with the night time shorts where the gusset is a lot wider. I was really hoping these would be the solution to my heavy periods, but they're even less reliable than maxi pads :(

    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 -2.0 on a scale of minus 2 to 2
    Was this helpful?
  • R
    Rachel
    I recommend this product
    Rated 4 out of 5 stars
    1 week ago
    4 Stars

    Very absorbent. Impressive.

    Was this helpful?
  • KN
    Kathryn N.
    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
    Rated 5 out of 5 stars
    3 weeks ago
    Something that finally works!

    Day 2 flow overnight has always been heavy that Super tampons and overnight pads can't handle. After stripping the bed too many times, I started also sleeping on a folded towel because that was easier to wash in the morning, then bought two Thinx period panties. They work fine for medium to light days/nights, but I go through BOTH of them overnight on Day 2, and still use the towel as a back-up. FINALLY! With this new Bikini Period. addition, I wore it alone overnight on Day 2 last month and this month, didn't bleed thru, and didn't have to change to a second pair at like 3am! That's AMAZING for me. Love 'em.

    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?