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

- Pair with matching Double Scoop Bikini Top

Feel full of confidence in full-coverage swimwear.
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Absorbs about the same as 2-3 super tampons of period blood.
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Rapidly absorbs moisture to keep you fresh and dry.
Image of a light and comfy surrounding text
Thin, subtle, and designed to feel just like regular swimwear.
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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

- Pair with matching Double Scoop Bikini Top

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. 

FINAL SALE

Items marked as "Sale", "Clearance" or “Black Friday Deal" are final sale, meaning no returns, exchanges or refunds can be accommodated. All final sale items are not eligible for our First Pair Risk-Free Policy.

We offer free standard shipping on all orders over $80.

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. 

Canadian Orders: Please allow 2–4 business days for shipping to the GTA, 3–10 business days for urban areas, and 6–15 business days for remote locations.

NOTE: Orders placed on Friday after 1 PM will not be processed until the following Monday.

FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
nothing is TMI here—we promise.
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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.

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.

COMFORTABLE
ABSORBENT
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
ABSORBENT
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
ABSORBENT
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
ABSORBENT
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
ABSORBENT
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
ABSORBENT
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
ABSORBENT
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
ABSORBENT
JUST PLAIN BETTER
REUSABLE
Reviews
average rating 4.4 out of 5
Based on 57 reviews
  • 5 Stars
    42 Reviews
  • 4 Stars
    8 Reviews
  • 3 Stars
    1 Review
  • 2 Stars
    2 Reviews
  • 1 Star
    4 Reviews
88% 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
Review posted
Reviewed by Lyndy
Rated 5 out of 5

5 Stars

Fit perfect

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Reviewed by Joslyn P.
Verified Buyer
Rated 5 out of 5

True to fit

My teen loves this. She wore it on a semi-heavy flow day and was fine :)

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Review posted
Reviewed by Megan L.
Verified Buyer
I'm a...
Parental Figure
I purchased for...
A Teenager/Tween
Band Size
N/A
Pant Size
Teen 00-2
Size Purchased
M
Usage
  • Pool
Rated 5 out of 5

Swim bottom review

It’s amazing my daughter was pleased with the fit and confident gave her to go on her swimming party

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Quality
Rated 5 out of 5
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 Fits Small, 0 is True to Size and 2 is Fits Large
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Review posted
Reviewed by LAURIE
Verified Buyer
Rated 5 out of 5

Swim wear

My teenage girls have the swim bottoms and love them

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Review posted
Reviewed by Elisha C.
Verified Buyer
Band Size
30"
Pant Size
Kids 12-14
Size Purchased
M
Usage
  • Pool
  • Beach
Rated 5 out of 5

My daughter loved them

Comfy and work well

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I recommend this product
Quality
Rated 5 out of 5
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 Fits Small, 0 is True to Size and 2 is Fits Large
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