Period-Proof High Rise Cheeky Bottom

This high-rise bottom is designed with a comfy banded waistline and 50+ SPF protection. Plus, it’s seawater- and chlorine-resistant, and made with our patented,  3-layer leakproof technology plus an extra layer of waterproof fabric. 

First layer: Moisture-wicking, antimicrobial technology quickly absorbs sweat and moisture while neutralizing odors to keep you fresh all day long.
Second layer: A super thin, highly-absorbent liner that holds the power of 3 tampons.
Third layer: A secure, liquid-resistant outer layer keeps leaks from happening.
Fourth layer: Another thin layer of waterproof material for extra protection.

Wear it as backup with a tampon or menstrual cup on heavier days or wear it alone on lighter days.


hello, worry-free swim days!
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Holds up to 3 tampons or pads worth of blood.
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Rapidly absorbs moisture to keep you fresh and dry all day.
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Thin, subtle, and designed to feel just like regular swimwear.
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Simple care with mild detergent and machine wash on cold.

This high-rise bottom is designed with a comfy banded waistline and 50+ SPF protection. Plus, it’s seawater- and chlorine-resistant, and made with our patented,  3-layer leakproof technology plus an extra layer of waterproof fabric. 

First layer: Moisture-wicking, antimicrobial technology quickly absorbs sweat and moisture while neutralizing odors to keep you fresh all day long.
Second layer: A super thin, highly-absorbent liner that holds the power of 3 tampons.
Third layer: A secure, liquid-resistant outer layer keeps leaks from happening.
Fourth layer: Another thin layer of waterproof material for extra protection.

Wear it as backup with a tampon or menstrual cup on heavier days or wear it alone on lighter days.


Body: 85% Nylon, 15% Spandex

Lining: 85% Nylon, 15% Spandex

Gussets: 

1. Hydrophilic + Waterproof Layer 100% Polyester with FreshFix™ Technology 

2. Waterproof Membrane Pu Film

Fabric is seawater and chlorine resistant and has 50+ SPF protection. 

Machine-wash cold, lay flat to dry. Do not bleach.

We ship our items via DHL, or Canada Post depending on your location. Please allow 1-2 business days for your order to dispatch.

For orders to Canada 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.

For orders to the US please allow 3-10 business days for orders to arrive.

For international orders please allow 10-25 business days.

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

Please see our Shipping page for more info.

FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
FOR THIS GENERATION
FOR THE PLANET
FOR REAL LIFE
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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
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FOR THE PLANET
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FOR THE PLANET
FOR REAL LIFE
Nothing is TMI here—we promise.
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All of our swimsuits have the same patented, 3-layer leakproof technology as our underwear plus an additional thin layer of waterproof material for extra protection. Here’s the breakdown.

First layer: Moisture-wicking, antimicrobial technology wicks away sweat and moisture while neutralizing odors to keep you fresh all day long.

Second layer: A super thin, highly-absorbent liner that holds the power of 3 tampons.

Third layer: A secure, liquid-resistant outer layer keeps leaks from happening.

Fourth layer: Another thin layer of waterproof material for extra protection.

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

Not always. When your flow is light, KT Swimwear can be worn alone without any additional period protection. On super heavy days,  the swimwear works great as backup protection with a tampon or menstrual cup. Every period is different though, and we recommend doing whatever makes you feel most confident.

The layers in the gusset of the underwear work to trap and absorb blood. We want you to feel 100% confident in your KT Swimwear, so if it is a super heavy flow day, we suggest wearing a tampon or menstrual cup with your suit.

Just machine-wash cold and lay flat to dry. Do not bleach.

Definitely. KT Swimwear is seawater and chlorine resistant, and has 50+ SPF protection!

If you’re not sure which size underwear to get, just book a Virtual Fitting and someone from the Knix team will video chat you to walk you through everything!

Yes. All KT Period-Proof Swim Bottoms and One-pieces are eligible for a return or exchange within 30 days of delivery and with original sanitary strip and tags attached. KT Period-Proof Swim Tops are eligible for a return or exchange within 30 days of delivery with original tags attached.

Absolutely. KT Swimwear looks and feels just like regular swimwear with a barely-there, leakproof liner.

Our styles are made to fit teen bodies. For Period-Proof Underwear in adult sizes, please visit Knix.com.

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 3.6 out of 5
Based on 99 reviews
  • 5 Stars
    38 Reviews
  • 4 Stars
    21 Reviews
  • 3 Stars
    14 Reviews
  • 2 Stars
    10 Reviews
  • 1 Star
    16 Reviews
71% of reviewers would recommend this product to a friend
Quality
Rated 4 out of 5
Comfort
Rated 3 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 4 out of 5
99 Reviews
Reviewed by Erin M.
Verified Buyer
I recommend this product
I'm a...
Adult
I purchased for...
A Teenager/Tween
Band Size
N/A
Pant Size
Teen 00-2
Size Purchased
S
Usage
  • Pool
  • Swim Class
  • Beach
  • Sun Bathing
Rated 3 out of 5
Review posted

A little too cheeky!

I think the swimsuit idea is great for teens who want to swim without tampons. So I bought these for my daughter. However she got them and put them on and her bum cheeks hang out! I think these need to have a bit more bum coverage for kids.

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Quality
Rated 5 out of 5
Comfort
Rated 3 out of 5
Effectiveness
Rated 5 out of 5
Sizing
Rated -1 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Was this helpful?
Reviewed by Kerri M.
Verified Buyer
I don't recommend this product
I'm a....
Parental Figure
I purchased for
A Teenager/Tween
Band Size
34"
Pant Size
Teen 4-10
Size Purchased
L
Usage
  • Beach
  • Pool
Rated 1 out of 5
Review posted

Ummmm NO

I bought these for my 11 year old who has recently just started her period. We are going on vacation and bought these for reassurance in case she started her period while we were there. No where in the description does it state these are the cheeky cut. Half of her bottom hangs out. Thank goodness I can return these and get a refund.

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Quality
Rated 3 out of 5
Comfort
Rated 1 out of 5
Effectiveness
Rated 1 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
Was this helpful?
Reviewed by Crystal N.
Verified Buyer
I don't recommend this product
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
  • Swim Class
Rated 3 out of 5
Review posted

Poor coverage for the bum area!

While I love the concept, I wish the fit was better. My daughter is 13 and a size 1. The bottoms we ordered fit her well, other then it being so high rise that her bum cheeks hang out and it is not appropriate for her age. If she was a larger girl it would look like a thong! I would expect, since these are geared towards teens, better coverage bottoms!!

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Quality
Rated 4 out of 5
Comfort
Rated 2 out of 5
Effectiveness
Rated 3 out of 5
Sizing
Rated -2 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Was this helpful?
Reviewed by Angela
Verified Buyer
I don't recommend this product
I'm a....
Parental Figure
I purchased for
A Teenager/Tween
Band Size
32"
Pant Size
Teen 12-16
Size Purchased
L
Usage
  • Pool
Rated 2 out of 5
Review posted

Way too cheeky & runs small

Bought for my 13 year old. Her bum is completely exposed. She wears a size small, the large didn’t even fit either. Would not market these to teens. Sad it’s so hard to find something appropriate.

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Quality
Rated 4 out of 5
Comfort
Rated 3 out of 5
Effectiveness
Rated 3 out of 5
Sizing
Rated -1 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Was this helpful?
Reviewed by Gina
Verified Reviewer
I recommend this product
Rated 5 out of 5
Review posted

My Daughter is Obsessed!

My daughter always skipped school swimming trips (pre-Covid) when she was on her period since she was too nervous to wear a tampon. Now, she can swim confidently on her period with these bottoms! She loves the high-rise fit and finds it super flattering!

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