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
946 Reviews
$12.00
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1 pair absorbs 9 tampons of flow

Super absorbent, sleek style made for heavy days. 

Absorbs 9 tampons worth of flow or five pads. 

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 946 reviews
Total 5 star reviews: 555 Total 4 star reviews: 201 Total 3 star reviews: 126 Total 2 star reviews: 56 Total 1 star reviews: 8
80%would recommend this product
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946 reviews
  • RM
    Rachel M.
    Verified Buyer
    I recommend this product
    What do you use your Period. products for? Primary Period Protection, Overnight Protection , Period Backup
    Rated 5 out of 5 stars
    1 week ago
    Buy them!

    Love them, comfortable, keeps you feeling clean. They do give you a panty line but it doesn’t show if you wear jeans.

    Was this helpful?
  • C
    Caitlyn
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Keeps me protected all day as a leak guard, or when I’m free bleeding at home. Easy to clean

    Was this helpful?
  • M
    Mariel
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Great item i ordered them a while ago and im still so happy with the results

    Was this helpful?
  • AA
    Aya A.
    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 4 out of 5 stars
    1 month ago
    Pretty great, but leaks with me on my heavy days

    The underwear is pretty comfortable (slightly slim fitting for the size, but for me that’s a pro because you feel very secure wearing them). I bought period underwear because I tried reusable pads, but those moved around when I slept. Period underwear is much better; it stays in place, the gusset is nice and long so it catches blood regardless of your sleeping position. These products are very absorbent, but there’s a caveat: they absorb a small amount at a time. So if there is a large amount of fluid at once, it’s likely to spread to the edges, where there’s less absorbency, and then bleed out. You could be a “heavy flower” and be fine, or you could still have trouble with this product if you get a LOT of blood at once (I fall into this category). That being said, I am still intending to buy more from Period, but planning to experiment with the categories to see what actually works for a very heavy flow.

    Was this helpful?
  • BK
    Bridget k.
    Verified Buyer
    I recommend this product
    What size of underwear do you typically wear? S
    What size in Period. did you purchase? S
    What do you use your Period. products for? Primary Period Protection, Everyday wear
    Rated 5 out of 5 stars
    1 month ago
    love so much

    these are my favorite cut of the undies (other than the boxers). love love love. changed the game

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