Reviewed by Mychele R.
Verified Buyer
Reviewing
Period Swim Full-Coverage Bikini Bottom
I recommend this product
Exceptional quality
Just as adverised . True to size and great quality
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Period Swim Full-Coverage Bikini Bottom
More comfortable with more coverage? We made these just for you. A mid-rise fit with fuller bum coverage than our regular bikini bottoms, and the leak-fighting power of about the same as 2-3 super tampons! Perfect for beach days, pool parties and all the hangouts you would’ve missed.
Layer 1: A silky-smooth top layer that sits comfortably against the skin.
Layer 2: A highly-absorbent middle layer designed with our leakproof technology to absorb about the same as 2-3 super tampons.
Layer 3: A waterproof outer layer never swells.
Other Features:
- Bum coverage: Full
- Fully lined
- Super-discreet liner
- 50+ UPF protection
MIX & MATCH, SAVE 10%: Purchase a swim top and bottom together and save 10% at checkout.
Feel full of confidence in full-coverage swimwear.
Absorbs about the same as 2-3 super tampons of period blood.
Rapidly absorbs moisture to keep you fresh and dry.
Thin, subtle, and designed to feel just like regular swimwear.
Simply machine wash cold and lay flat to dry.
More comfortable with more coverage? We made these just for you. A mid-rise fit with fuller bum coverage than our regular bikini bottoms, and the leak-fighting power of about the same as 2-3 super tampons! Perfect for beach days, pool parties and all the hangouts you would’ve missed.
Layer 1: A silky-smooth top layer that sits comfortably against the skin.
Layer 2: A highly-absorbent middle layer designed with our leakproof technology to absorb about the same as 2-3 super tampons.
Layer 3: A waterproof outer layer never swells.
Other Features:
- Bum coverage: Full
- Fully lined
- Super-discreet liner
- 50+ UPF protection
MIX & MATCH, SAVE 10%: Purchase a swim top and bottom together and save 10% at checkout.
Body: 85% Nylon, 15% Spandex
Lining: 85% Nylon, 15% Spandex
Gusset: Fresh Fix Technology®, Polyurethane Film
Machine wash cold and lay flat to dry. Do not bleach, iron, or dry clean.
Eligible for a return or exchange within 30 days of delivery and with original sanitary strip and tags attached.
We offer free standard shipping on all orders over $70. We ship our items via DHL or Canada Post depending on your location. Please allow 1-2 business days for your items to be processed and shipped. During high volume periods, your order may take up to 7 business days to dispatch from our warehouse location.
US Orders: Please allow 3–10 business days for orders to arrive.
International Orders: Please allow 10–25 business days for orders to arrive.
NOTE: Orders placed on Friday after 1 PM will not be processed until the following Monday.
CANADIAN CUSTOMERS: Shop www.knixteen.ca to order in Canadian currency.
nothing is TMI here—we promise.
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When you purchase a swim top and bottom together, you’ll automatically save 10% at checkout.
Our period swim bottoms contain a triple-layer gusset that absorbs your flow and locks in leaks, whether you're in or out of the water. When they go in the wash with detergent, the blood releases through the top layer—leaving your swimwear fresh and clean for next time. Yes, your other clothes will remain stain-free!
Here's the breakdown of our 3-layer leakproof technology:
Layer 1: A silky-smooth top layer that sits comfortably against the skin.
Layer 2: A highly-absorbent middle layer designed with our leakproof technology to absorb up to 1-3 tampons worth of period blood.
Layer 3: A waterproof outer layer prevents swelling.
Not always. When your flow is light, our swimwear can be worn alone without any additional period protection. On super heavy days, we recommend wearing a tampon or menstrual cup with your swimwear. Every period is different though, and we recommend doing whatever makes you feel most confident.
Machine wash cold and lay flat to dry. Do not bleach, iron, or dry clean.
Check out our size chart here.
Yes! All of our regular price swim bottoms and one-pieces are eligible for a return or exchange within 30 days of delivery, as long as the original sanitary strip and tags are attached. Our swim tops are eligible for a return or exchange within 30 days of delivery with original tags attached.
All items purchased as part of the Kt Vault Sale are final sale, meaning no returns, exchanges or refunds can be accommodated. For non-sale items our standard return policy applies.
Absolutely! The leakproof liner built into all of our period swimwear is undetectable, so they look and feel just like regular swimwear.
Our styles are made to fit teen bodies. For period swimwear in adult sizes, please visit Knix.
Reviews
Based on 42 reviews
81%
of reviewers would recommend this product to a friend
| Quality |
Rated 4 out of 5
|
| Comfort |
Rated 4 out of 5
|
| Effectiveness |
Rated 4 out of 5
|
| Sizing |
Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
|
42 Reviews
Reviewed by Tracy M.
Verified Buyer
Reviewing
Period Swim Full-Coverage Bikini Bottom
I recommend this product
Amazing
My daughter feels confident! Looking into purchasing for myself! Love the exchange policy and how easy it is!
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Reviewed by C L.
Verified Buyer
Reviewing
Period Swim Full-Coverage Bikini Bottom
I recommend this product
Nice fit
We haven’t tried it yet in the water but it’s a nice fit.
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Reviewed by Jodie E.
Verified Buyer
Reviewing
Period Swim Full-Coverage Bikini Bottom
I recommend this product
Love them
Great fit and great coverage
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Reviewed by Maryse F.
Verified Buyer
Reviewing
Period Swim Full-Coverage Bikini Bottom
I recommend this product
I'm a...
Parental Figure
I purchased for...
A Teenager/Tween
Pant Size
Kids 16-20
Size Purchased
S
Band Size
N/A
Usage
- Period
Pratique !
Bas de bikini simple et pratique. Confortable. Acheté pour ma fille de 13 ans (porte du 0-2 grandeur femme). Tissu noir qui se marie bien à ces autres hauts de bikini. Se lave bien, sèche vite.
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| Quality |
Rated 5 out of 5
|
|---|---|
| Comfort |
Rated 5 out of 5
|
| Sizing |
Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to SIze and 2 is Fits Large
|
| Effectiveness |
Rated 5 out of 5
|
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