Leakproof Classic One Piece Swimsuit
• Timeless style in a fit that we’ve spent years perfecting
• Adjustable straps make it adaptable for different torso lengths
• Premium UPF 50+ fabric
• Discreet, built-in protection against leaks: Absorbs about 1 regular tampon worth of blood
Fit tip: Plus cup sizes come with thicker straps for added support.
Leakproof fit tip: A snug fit against your body helps keep everything where it should be. Check the size guide to find your best fit. If you’re in between, size down to ensure the liner is sitting closer to your body.
🇺🇸 Free standard shipping over $100*.
Free expedited shipping over $150*. Duty-free. (after discounts, before shipping + taxes)
Swim items are eligible for a return or exchange within 30 days of delivery and with tags and original sanitary strip (swim bottoms and one pieces) attached. For sale items with a 20% or more discount you may exchange for another item or store credit.
- Kate M.Verified Buyer1 week agoRated 5 out of 5 starsGreat fit!
I am 5'3 and 110 lbs but with a longer torso than most - size S fits perfectly!
EffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentComfortRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated 0.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeEase of Use Rated 5.0 on a scale of 1 to 5Poor ExcellentSupportRated 4.0 on a scale of 1 to 5Low HighEase of UseRated 5.0 on a scale of 1 to 5Poor ExcellentWas this helpful? - Meaghan C.Verified Buyer1 month agoRated 5 out of 5 starsGreat Bathing Suit
Love the fit of this suit and the folks at Knix are so helpful!
EffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentComfortRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated 1.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeEase of Use Rated 5.0 on a scale of 1 to 5Poor ExcellentSupportRated 5.0 on a scale of 1 to 5Low HighEase of UseRated 5.0 on a scale of 1 to 5Poor ExcellentWas this helpful? - JoAnne Y.Verified Buyer2 months agoRated 5 out of 5 starsNice bathing suits
Veey impressed with this bathing suit covers and supports well
EffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentComfortRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated 0.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeEase of Use Rated 4.0 on a scale of 1 to 5Poor ExcellentSupportRated 4.0 on a scale of 1 to 5Low HighEase of UseRated 4.0 on a scale of 1 to 5Poor ExcellentWas this helpful?
Your swimwear questions, answered.
Yes, our entire Swim Collection is available for exchange or return. If you’re not happy with your fit, the suits can be returned within 30 days with the sanitary strip intact and tags attached.
Most of our swimsuit styles come in options for A-G cups. Select styles accommodate from an A-DD. Please refer to the side guide on the product page for details.
Yes, some of our suits do have cups that can be removed. Please refer to the “How It Fits” section on the product page for details.
Fit to your cup size for the best support. If there is a dramatic difference between your underbust and hip measurement, we suggest trying the suit on with the sanitary strip intact and tags attached. That way it can be returned or exchanged for a better fit if needed.
