Join Our Rewards Program
Earn rewards and exclusive member-only benefits for free.
Teen Period Swim Square Neck One-Piece
KnixTeen
Teen Period Swim Square Neck One-Piece
$88.00
USD
Absorbs about 3 regular tampons
Full coverage style
Flattering square neckline
Premium UPF 50+ fabric
Machine washable
Size and Fit Guide
How to Measure
In order to select the correct sizing, we recommend you take the following measurements using a soft tape measure. If necessary, ask someone else to help.
Waist
Measure around the narrowest part of your torso, usually just above your belly button. Keep the tape snug and level, but not tight. The number where it meets is your waist measurement.
Hip
Stand with your feet together and measure around the fullest part of your hips and buttocks. Keep the tape level and snug, but not tight. The number where it meets is your hip measurement.
Rewards Members Earn
88 Points
You May Also Like
Product Description
Swim in Style
A sporty style with a square neckline, built-in shelf bra and removable cups.
Worry-Free Protection
Discreet, built-in protection that absorbs about 3 regular tampons worth.
Sun-Smart Protection
UPF 50+ fabric protects your skin while you soak up the sun.
Zoom
How to Choose?
Essential
- • Days you don’t need leak protection. Everyday freshness and moisture wicking.
-
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.
-
about 8-14 tsp
-
about 1.5-3 regular pads
-
about 4-7 super tampons
-
about 1.5-3 menstrual cups
Light
- • Daily freshness. For sweat, discharge, period spotting, or backup protection.
-
about 1-3 tsp
-
about 1-3 pantyliners
-
about 1-3 regular tampons
-
about 0.5 menstrual cups
Moderate
- • For mid-cycle flow, surprise cough or sneeze leaks, or a really sweaty spin class.
-
about 4-8 tsp
-
about 1-1.5 regular pads
-
about 2-4 super tampons
-
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.
-
about 15-20 tsp
-
about 1.5-2.5 super pads
-
about 7-11 super tampons
-
about 2-3 menstrual cups
Explore Teen Best-Sellers
KnixTeen
Teen Super Leakproof® Sleepover Boxer
$45.00
USD
Buy More, Save More
Color: Blue Stripe
+2
KnixTeen
Teen Leakproof UltraThin No-Show Bikini 3-Pack
$65.00
USD
Save $7
Color: Pastel Wings/Pink Orchid/Blush Limited Edition
+5
New
Teen Leakproof UltraThin No-Show Thong
$24.00
USD
Buy More, Save More
Color: Pastel Wings Limited Edition
+3
KnixTeen
Teen Period Swim Sport One-Piece
$88.00
USD
Color: Orchid Ombre Limited Edition
+5
Best Seller
Teen Period Swim Bikini Bottom
$45.00
USD
Color: Seaside Plaid Limited Edition
+5
KnixTeen
Teen Leakproof UltraThin No-Show Boyshort 3-Pack
$65.00
USD
Save $7
Color: Pastel Wings/Pink Orchid/Blush Limited Edition
+8
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
Middle Layer
Recently Viewed
Total 5 star reviews: 33 Total 4 star reviews: 1 Total 3 star reviews: 1 Total 2 star reviews: 1 Total 1 star reviews: 2
What our customers are saying
Generated by AI from 38 most recent customer reviews
Last updated 3 days ago
Customers say this swimsuit fits true to size and provides comfortable, flattering coverage for tweens and teens. Many reviews mention the adjustable straps and modest cut that works well for young swimmers. Parents frequently praise how the suit gives their daughters confidence during swimming activities. Common feedback includes appreciation for the supportive shelf bra and quality construction. While most find the fit perfect, some suggest sizing up for longer torsos or prefer more coverage in the back area. A few mention strap durability concerns after extended wear.
89%would recommend this product
Search
Keywords
Rating
Height
Usual Pant Size - Knixteen
Size Purchased - Knixteen Underwear
38 reviews
- Rated 5 out of 5 stars5 months agoGood fit!
This is a good fit. The cut offers great coverage. Washes well.
Chir C.Verified BuyerReviewingTeen Period Swim Square Neck One-Piece - Rated 5 out of 5 stars6 months agoLovely fit and comfortable
Functions as described and has a flattering and comfortable fit.
Chanta B.Verified BuyerReviewingTeen Period Swim Square Neck One-Piece - Rated 5 out of 5 stars8 months agoPerfect fit!
The suit fits true to size and you would never know it is reinforced. It’s quite modest as well. The adjustable straps are a great option.
Heather G.Verified BuyerReviewingTeen Period Swim Square Neck One-Piece - Rated 5 out of 5 stars8 months agoPeriod Swim Square Neck One-Piece
This is great for my 11-year old for swimming!
Christina P.Verified BuyerReviewingTeen Period Swim Square Neck One-Piece - Rated 1 out of 5 stars8 months agoTERRIBLE
PLEASE DONT BUY THIS PERIOD SWIM. IT WILL NOT PROTECT YOUR DAUGHTER FROM A HUGE LEAK. I WISH I NEVER BOUGTH THIS FOR MY DAUTHER.
Paola R.Verified BuyerReviewingTeen Period Swim Square Neck One-Piece - Rated 5 out of 5 stars9 months agoDaughter Approved!!
Great fit, fun and sporty!! My daughter is begging for more!!
JEANANNE D.Verified BuyerReviewingTeen Period Swim Square Neck One-Piece - Rated 1 out of 5 stars9 months agoBeware of using the coupon if you need to return!
Just a warning for those that use the “welcome” 20 % off coupon. If you use the coupon your items are considered “sale” items and you cannot get your money back if you return the item, you only get store credit. I ordered two different sizes of swimsuits because I wasn’t sure which one would fit my daughter better. Now I can’t get my money back on the one that doesn’t fit just a $70+ credit that I don’t want or need! I read over the return policy before I even bought the stuff to make sure I could return it. It wasn’t on sale so I thought I could get my money back not realizing that after I entered a coupon code at checkout that it made it become a sale item. Just kinda sneaky to me! Not a company I want to do further business with.
NitaVerified BuyerReviewingTeen Period Swim Square Neck One-Piece - Rated 5 out of 5 stars9 months agoGreat teen swimsuit
Fits as described
Heather G.Verified BuyerReviewingTeen Period Swim Square Neck One-Piece - Rated 5 out of 5 stars9 months agoGreat suit for a self conscious tween!
The adjustable straps are great for a rapidly growing kid
megan W.Verified BuyerReviewingTeen Period Swim Square Neck One-Piece - Rated 5 out of 5 stars10 months agoLoved this!
My tween loved this! Took the fear away of going into the water and let her just be a normal kid hanging out with friends and family at the pool and the lake!
Farrah E.Verified BuyerReviewingTeen Period Swim Square Neck One-Piece - Rated 5 out of 5 stars10 months agoA hit!
My discerning 11-year-old granddaughter loves this suit.
Elaine C.Verified BuyerReviewingTeen Period Swim Square Neck One-Piece - Rated 5 out of 5 stars1 year agoShe loves it!
My daughter loves this swimsuit!
Stephanie L.Verified BuyerReviewingTeen Period Swim Square Neck One-Piece
