Triangle Bikini Top

Easy and adjustable, the Triangle Bikini Top is a summer staple. With a secure underband and straps that criss-cross in the back—you get elevated support and style. Mix and match it with our Swim Short, Full-Coverage Bikini Bottom, or Twist High Rise Bikini Bottom for a period-proof suit that’s totally you!

Other Features:

- Fully lined

- Removable cups

- 50+ UPF protection

MIX & MATCH, SAVE 10%: Purchase a swim top and bottom together and save 10% at checkout.

A go-to classic swim top that pairs perfectly with any Kt leakproof bottom.
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Image of a seawater resistant surrounding text
Seawater & chlorine resistant means less fading & longer wear.
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Built with 50+ UPF protection to block out harmful rays.
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Designed to provide ultimate comfort and support.
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Simply machine wash on cold and lay flat to dry.

Easy and adjustable, the Triangle Bikini Top is a summer staple. With a secure underband and straps that criss-cross in the back—you get elevated support and style. Mix and match it with our Swim Short, Full-Coverage Bikini Bottom, or Twist High Rise Bikini Bottom for a period-proof suit that’s totally you!

Other Features:

- Fully lined

- Removable cups

- 50+ UPF protection

MIX & MATCH, SAVE 10%: Purchase a swim top and bottom together and save 10% at checkout.

Machine wash cold and lay flat to dry. Do not bleach, iron, or dry clean. 


Body: 85% Nylon, 15% Spandex

Lining: 85% Nylon, 15% Spandex

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.

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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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.

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 7 reviews
  • 5 Stars
    6 Reviews
  • 4 Stars
    0 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    1 Review
100% of reviewers would recommend this product to a friend
Quality
Rated 5 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
7 Reviews
Reviewed by Tiina K.
Verified Buyer
I recommend this product
I'm a...
Parental Figure
I purchased for...
A Teenager/Tween
Pant Size
Teen 00-2
Size Purchased
S
Band Size
N/A
Usage
  • Other
Rated 5 out of 5
Review posted

Typical bikini top

Bought to match the bikini bottoms

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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
Was this helpful?
Reviewed by Linda K.
Verified Buyer
I 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
XS
Usage
  • Pool
Rated 5 out of 5
Review posted

For my granddaughter.

Granddaughter love it, she is 14 so it's a little too low cut for me (and her parents)

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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
Was this helpful?
Reviewed by Nicole J.
Verified Buyer
(closed) Swim Top Triangle Bikini - Last Call
Reviewing
(closed) Swim Top Triangle Bikini - Last Call
I recommend this product
I'm a...
Parental Figure
I purchased for...
A Teenager/Tween
Pant Size
Kids 12-14
Size Purchased
M
Usage
  • Other
Rated 5 out of 5
Review posted

Amazing bathing suit top!

My daughter loves this top!!!! Fits her very well, she loves the gold details. She is currently wearing a size 32 B

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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
Was this helpful?
Reviewed by Caitlin D.
Verified Buyer
I recommend this product
I'm a...
Adult
I purchased for...
Myself
Band Size
32"
Pant Size
Teen 18-20
Size Purchased
M
Usage
  • Pool
  • Beach
  • Sun Bathing
Rated 5 out of 5
Review posted

Cute top!

I love the design of this top, and especially the fact that it doesn't have any plastic-y grips that usually end up rubbing after a day of wear. This top is super comfy all day long, and surprisingly supportive for a triangle top. No wardrobe malfunctions!

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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
Was this helpful?
Reviewed by Julia G.
Verified Buyer
I recommend this product
I'm a....
Parental Figure
I purchased for
A Teenager/Tween
Band Size
30"
Pant Size
Teen 00-2
Size Purchased
M
Usage
  • Pool
  • Sun Bathing
Rated 5 out of 5
Review posted

Triangle bikini top /bottoms

My daughter loves this bathing suit and so so do I. You would never know it is not a regular suit and now she can swim with no worries!

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Quality
Rated 5 out of 5
Comfort
Rated 5 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?