Leakproof High Rise Bikini Bottom

A banded high-rise bottom with gentle tummy compression, flattering high rise coverage, plus a built-in absorbent liner for confident period protection – about the same as 3 tampons.

Period Swimwear FAQs

The layers in the gusset of the underwear work to trap and absorb your period so it doesn't leak in the water (or on land!) Our Swimwear features the same Leakproof Technology as our Period Underwear with an additional thin layer of waterproof material for extra protection.

The inner layers absorb the blood and traps it, so there's no leakage when you swim. When it goes in the laundry with detergent, it releases through the top layer— leaving your swim fresh and clean for tomorrow's laps. Reminder: No bleach or softener, and lay flat to dry.

Our Leakproof Swimwear has a super discreet absorbent pad in the gusset liner that absorbs up to 3 tsps of blood, which equals about 3 tampons.

You don’t need to. Every period is different though, and we recommend doing whatever makes you feel most confident. Knix Period Swimwear can be worn alone without any additional period protection or used as backup protection on super heavy days with a tampon or menstrual cup.

The layers in the underwear work to trap and absorb blood while you swim. We want you to feel 100% confident in your Period Swimwear, so if it is a heavy flow day, we suggest wearing tampons or menstrual cups with your suit for worry-free swim protection.

After your swim, just machine-wash the swimwear on a cold cycle and lay flat to dry. Do not bleach.

Definitely. Our swimwear is seawater and chlorine resistant and has 50+ SPF protection!

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average rating 3.7 out of 5
Based on 6 reviews
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67% of reviewers would recommend this product to a friend
Comfort
Rated 5 out of 5
Effectiveness
Rated 4 out of 5
Sizing
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
6 Reviews
Reviewed by Emalyn
Verified Reviewer
Leakproof High Rise Bikini Bottom
Reviewing
Leakproof High Rise Bikini Bottom
I recommend this product
Pant Size
10
Size Purchased
M
Usage
Primary Period Protection
Rated 5 out of 5
Review posted

SAVED ME

I absolutely loved this product I have a heavier flow and this worked perfectly. I was able to wear it for my whole swim lesson and I did not see a single leak! I do not like tampons and I was scared that swimming was ruined for me. I’m so happy I found knix!

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Comfort
Rated 5 out of 5
Effectiveness
Rated 5 out of 5
Sizing
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
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Reviewed by Marielle
Verified Buyer
Leakproof High Rise Bikini Bottom
Reviewing
Leakproof High Rise Bikini Bottom
I recommend this product
Pant Size
8
Size Purchased
M
Usage
Period Back-Up
Rated 5 out of 5
Review posted

Comfortable and works!

I was skeptical, but thought I'd give them a try because it never fails that i have my period for beach vacations. They did not disappoint! Period day 1 (with a tampon), but no access to a bathroom on the beach for 3 hours and it worked! I'm so impressed. If you're on the fence I would 100% recommend giving them a try.

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Comfort
Rated 5 out of 5
Effectiveness
Rated 5 out of 5
Sizing
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Was this helpful?
Reviewed by Ashleigh
Verified Reviewer
Leakproof High Rise Bikini Bottom
Reviewing
Leakproof High Rise Bikini Bottom
I recommend this product
Pant Size
8
Size Purchased
M
Usage
Sweat
Rated 5 out of 5
Review posted

Best Swim bottoms 2 years in a row

I Bought a pair of these in solid black last year and they became my go to swim bottom. Even though I did not always wear for leak protection, I found that after a full day in and out of the water on hot days I'd be less likely to have other issues develop because they wick away the moisture.

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Comfort
Rated 5 out of 5
Effectiveness
Rated 5 out of 5
Sizing
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Was this helpful?