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KnixTeen

Teen Period Swim Sport One-Piece

$88.00 USD

Absorbs about 2 super tampons

Medium coverage

Sporty scoop neckline

Premium UPF 50+ fabric

Machine washable

Maya has 35

Maya has 35" hips and is wearing a size M

| Black
Maya has 35

Maya has 35" hips and is wearing a size M

Maya has 35

Maya has 35" hips and is wearing a size M

| Black
| General

Maya has 35" hips and is wearing a size M

Color: Black

Size:

True to Size

Size:

Size and Fit Guide

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Shipping

Shipping

Processing Timelines

Please allow 1-2 business days for our warehouse team to pack and ship your order. During peak periods such as sales, holidays and product launches, please allow up to 4 business days for us to process your order. Once an order is placed, we cannot guarantee any address updates, order changes or cancellations. Orders placed on Friday after 1PM will not be shipped until the following Monday.


Split Shipments

Most orders will ship from a single warehouse. However, we occasionally ship from a combination of warehouse locations, so you may receive your order in multiple parts. If items from your order ship in separate packages, we’ll send you tracking information for each package when it becomes available.

Delivery Timelines

For the most up-to-date delivery time estimates, please refer to the shipping timeline at checkout. Delivery timelines do not include processing times. See above for details. All transit times are measured in business days which are Monday-Friday, excluding holidays.

Please note, all shipping timelines are estimates and are not guaranteed.

We are not able to ship to US territories (including Puerto Rico, U.S. Virgin Islands, Guam, Northern Mariana Islands and American Samoa) at this time.

Easy Returns within 30 Days

Clothing & Swim

Returns & Exchanges

Leggings, sweats, t-shirts, sleepwear, and swim items are eligible for return or exchange within 30 days of delivery with tags attached. Swim bottoms and pieces must have the original sanitary strip intact.

Still have questions? View our full policy here.

Rewards Members Earn 88 Points

Product Description

Swim with total freedom and zero worries. Whether she’s at summer camp or a pool party, the Teen Period Swim Sport One-Piece offers a modern, modest fit with high-performance technology. Crafted from UPF 50+ sun protection fabric, this chlorine-resistant suit keeps its shape and vibrant color all season long. The integrated absorbent zone offers a sustainable alternative to tampons, ensuring she stays dry and confident from the first lap to the last. It’s the "one-and-done" vacation essential for every active teen.

Swim in Style

A sporty one-piece style featuring removable cups and an open racerback for added mobility.

Worry-Free Protection

Discreet, built-in protection that absorbs about 2 super tampons worth.

Sun-Smart Protection

UPF 50+ fabric protects your skin while you soak up the sun.

Zoom

Maya has 35
| Black
Maya has 35
Maya has 35
| Black
| General

How to Choose?

Essential

  • Days you don’t need leak protection. Everyday freshness and moisture wicking.
  • tsp
    0 tsp

Heavy

  • Extra peace of mind. For the first days of your cycle, light bladder leaks, or a full night's sleep without a leak.
  • tsp
    about 8-14 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 4-7 super tampons
  • cup
    about 1.5-3 menstrual cups

Light

  • Daily freshness. For sweat, discharge, period spotting, or backup protection.
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

  • For mid-cycle flow, surprise cough or sneeze leaks, or a really sweaty spin class.
  • tsp
    about 4-8 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-4 super tampons
  • cup
    about 0.5-3 menstrual cups

Ultra

  • Ultimate peace of mind. For the heaviest period days, light bladder leaks, unexpected postpartum flow, or overnight protection.
  • tsp
    about 15-20 tsp
  • pad
    about 1.5-2.5 super pads
  • tampon
    about 7-11 super tampons
  • cup
    about 2-3 menstrual cups
LEAKPROOF SWIM WORKS IN LAYERS

Built-in protection that feels like nothing at all.

Looks just like regular swimwear. Non-swelling liner and patented no-show design.

Top Layer

Smooth and comfortable liner in swimsuit fabric.

4.6
Rated 4.6 out of 5 stars
Based on 238 reviews
Total 5 star reviews: 189 Total 4 star reviews: 27 Total 3 star reviews: 11 Total 2 star reviews: 3 Total 1 star reviews: 8
What our customers are saying
Customers say this swimsuit provides comfort and confidence for young swimmers. Many reviews mention its versatility as an everyday swimsuit, not just for special needs. While most praise the fit and style, some note sizing can run large, particularly for competitive swimmers. Common feedback includes appreciation for the coverage and sporty design. Reviews indicate mixed experiences with the suit during athletic activities - some find it ideal for swim practice, while others mention it becomes heavy when wet or shifts during diving. The majority report the suit meets its intended purpose well, though a few mention concerns about durability and fit in the shoulder area.
91%would recommend this product
ComfortRated 4.7 on a scale of 1 to 5
FitRated -0.1 on a scale of minus 2 to 2
EffectivenessRated 4.6 on a scale of 1 to 5
Keywords
Keywords
Rating
Ratings
Height
Height
Usual Pant Size - Knixteen
Usual Pant Size - Knixteen
Size Purchased - Knixteen Underwear
Size Purchased - Knixteen Underwear
238 reviews
  • Rated 5 out of 5 stars
    4 days ago
    Tellement cool

    Ma fille l adore.

    MArie-Josée R.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece
  • Rated 5 out of 5 stars
    2 weeks ago
    Love!

    My teens love this swimsuit especially for lifeguard training - good quality!

    Andrea G.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece
  • Rated 5 out of 5 stars
    2 months ago
    Daughter loved it!

    She loved the suit and felt completely comfortable.

    Tara W.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece
  • Rated 5 out of 5 stars
    2 months ago
    Recomended 100%

    My daugther is happy with it.

    Its very comfortable . Now that we know it works will get other fun colors! Totally recommend it.

    They should nake some for Mamas too!

    Mari A.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece
  • Rated 5 out of 5 stars
    2 months ago
    Period swim

    Nice pattern and fit.

    Nicole G.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece
  • Rated 5 out of 5 stars
    2 months ago
    Daughter’s favorites

    Daughter is reaching for these for lap swim class over her other sports swimsuits even when she isn’t on her period.

    Tara M.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece
  • Rated 4 out of 5 stars
    3 months ago
    Great concept

    Great concept but doesn't fit as well as regular swim suit. The sizing is a bit large.

    Josée B.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece
  • Rated 5 out of 5 stars
    3 months ago
    Tween Comfort

    I ordered this for my tween who is on a swim team. She has loved using the suit as it gives her confidence in the pool that she will not leak. She likes the thicker straps of the sport style suit. Will definitely buy more as she grows. She fell in between two sizes (S & M) the S has less gap area around her hips and bottom.

    Stephanie M.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece
  • Rated 5 out of 5 stars
    5 months ago
    Comfortable

    Great suit

    Holly R.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece
  • Rated 5 out of 5 stars
    5 months ago
    Easier for teens

    My daughter loves this so easy and doesn’t have to worry during swim club.

    Heidi S.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece
  • Rated 5 out of 5 stars
    5 months ago
    Tissus parfait

    Le tissus du maillot est doux et tellement confortable! Il fait parfaitement.

    Catherine R.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece
  • Rated 5 out of 5 stars
    6 months ago
    Great Purchase!

    Having this bathing suit is a wonderful boost for a kid new to having periods. I love what Knix offers and the way they do business!

    Julie B.
    Verified Buyer
    Reviewing
    Teen Period Swim Sport One-Piece