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
Fit tip: Plus cup sizes come with thicker straps for added support.
• Full butt coverage
• Adjustable straps
• Built-in shelf bra
• Removable cups
• Thicker straps for plus cups for added support
• Great for longer torsos
🇺🇸 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.
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.
- Whitney A.Verified Buyer9 minutes agoRated 5 out of 5 starsKnix can do no wrong!
Another home run for Knix. Quality, fit and style are all great.
ComfortRated 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 LargeSupportRated 4.0 on a scale of 1 to 5Low HighWas this helpful? - Anne C.Verified Buyer3 days agoRated 5 out of 5 starsGreat basic swim suit
This swimsuit fits perfectly. I love the fabric and design. A perfect basic in black suit for my vacation
ComfortRated 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 LargeSupportRated 4.0 on a scale of 1 to 5Low HighWas this helpful? - Tracy A.Verified Buyer1 week agoRated 5 out of 5 starsWild Cat 1 piece swimsuit.
Bought this in an xl+ and love it. I wear a 38H bra and clothing is size 14. I'm 5'8" and 207 lbs.This fit perfectly. I might have been able to go down 1 size, but wasn't sure the bust would still fit. It's a very nice suit!
ComfortRated 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 LargeSupportRated 5.0 on a scale of 1 to 5Low HighWas this helpful?
