(Kit Item) Summer Essentials Period Kit Black Sport One-Piece | One-Piece

The one-piece that keeps selling out! Perfect for all swimmers, it can be worn alone on light days, or with a tampon or menstrual cup on heavy days, and won’t leak whether you’re in or out of the water. Designed with three layers to keep you cool, calm, and protected:

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.


Other Features:

- Fully lined

- Open racerback for better mobility

- Removable cups

- Bum coverage: Medium

- Super-discreet liner

- 50+ UPF protection

- Seawater and chlorine resistant

The #1 essential for swimming freely and fearlessly on your period.
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.

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.

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
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
JUST PLAIN BETTER
REUSABLE
COMFORTABLE
JUST PLAIN BETTER
Reviews
average rating 5.0 out of 5
Based on 4 reviews
  • 5 Stars
    4 Reviews
  • 4 Stars
    0 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
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
Review posted
Reviewed by Catherine W.
Verified Buyer
Band Size
N/A
Pant Size
Teen 4-10
Size Purchased
M
Usage
  • Pool
Rated 5 out of 5

Pool Reassurance!

One of the biggest concerns my daughter had with joining the HS swim team was how to handle those certain tricky days of the month. This suit has relieved all those concerns! Whether or not she uses other protection methods at the same time, this suit helps relieve those worries, and allows her to swim with confidence. Her only frustration is that it isn't available in other colors, so she can be close to team colors, but even she says that's a minor point. :-)

Loading...
I recommend this product
Quality
Rated 5 out of 5
Comfort
Rated 4 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?
Review posted
Reviewed by Jacqueline
Rated 5 out of 5

5 Stars

60” tall, 32” chest, 28” waist, 33” hips, size small fit my daughter perfectly. She is excited to have this for swim team.

Loading...
I recommend this product
Was this helpful?
Review posted
Reviewed by Cory W.
Verified Buyer
Band Size
28"
Pant Size
Kids 12-14
Size Purchased
S
Usage
  • Swim Class
  • Pool
Rated 5 out of 5

Swimmer’s best friend

My daughter loves this suit for swim practice

Loading...
I recommend this product
Quality
Rated 5 out of 5
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 Fits Small, 0 is True to Size and 2 is Fits Large
Was this helpful?
Review posted
Reviewed by Catherine M.
Verified Buyer
I'm a...
Parental Figure
I purchased for...
A Teenager/Tween
Band Size
N/A
Pant Size
Kids 12-14
Size Purchased
S
Usage
  • Pool
  • Swim Class
  • Beach
  • Sun Bathing
Rated 5 out of 5

Great swimsuit!

Bought this for my 10yr old daughter. She fits size 10-12/12-14 kids. I debated between the XS and S but decided for the small which fit her great. She absolutely loves this. I bought the teen bundle which had a coupe underwear and swim shorts as well, the underwear are a little big (should have gotten XS for those), the swim shorts are really big in comparison to the swimsuit and underwear so if your kid is on the edge of two sizes, the bundle might not be the way to go. Anyway, this swimsuit is awesome!!

Loading...
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
Was this helpful?