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Sculpt Ruched One Piece Swimsuit

$130.00 USD

1 suit. 5 ways to wear.

Sculpt fabric

Built-in bra

UPF 50+ sculpt fabric

Cheeky coverage

Ruched sides

Front view of model wearing the Sculpt Ruched One Piece Swimsuit highlighting the neckline, sculpt fabric and fit

Sofia is a 32C and wearing KNIX S

Sculpt Ruched One Piece Swimsuit shown front-facing against a light gray background
Back view of model wearing the Sculpt Ruched One Piece Swimsuit highlighting the neckline, sculpt fabric and fit

Sofia is a 32C and wearing KNIX S

Sofia is a 32C and wearing KNIX S

Color: Black

Size:

True to Size

•

Size:

Size and Fit Guide

Free Shipping on orders $100+

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

Apparel, Sleep & Swim

Returns & Exchanges

Holiday Return Policy
Eligible items purchased online or in stores between November 2, 2026 and December 31, 2026 may be returned through January 29, 2027. All other purchases fall under our 30 day Returns Policy.

Standard Return Policy
Apparel (excluding Shapewear), sleep and swim are eligible for return or exchange within 30 days of delivery with tags attached. Swim bottoms and one-pieces must have the original sanitary strip intact.

Still have questions? View our full policy here.

Rewards Members Earn 130 Points

"This suit is SO flattering and comfortable. Quite honestly the best swimsuit I've ever owned."

- SANDRA Z. VERIFIED BUYER

Product Description

Embrace both flattering design and everyday performance with the Knix Sculpt Ruched One Piece Swimsuit, crafted to smooth and sculpt your silhouette with premium Sculpt fabric. This stylish one‑piece features removable, adjustable straps for multiple looks, cheeky coverage with eye‑catching ruching at the sides, and a built‑in shelf bra for comfortable support. Made from UPF 50+ sun‑protective material, it’s perfect for beach days, poolside lounging, or resort escapes — blending fashion, comfort, and confidence in one versatile swimsuit.

Sculpting Comfort

Premium Sculpt fabric smooths and hugs your natural shape.

Customizable Fit

Removable, adjustable straps let you create multiple looks and strap configurations.

Cheeky, Confident Coverage

Ruched sides add style while the built-in shelf bra supports your shape.

Sun-Smart Protection

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

Zoom

Sofia is a 32C and wearing KNIX S | Front view of model wearing the Sculpt Ruched One Piece Swimsuit highlighting the neckline, sculpt fabric and fit | Black
Sofia is a 32C and wearing KNIX S | Back view of model wearing the Sculpt Ruched One Piece Swimsuit highlighting the neckline, sculpt fabric and fit | Black

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

Find Your One-Piece

Leakproof swim works in layers

The 3-layer liner absorbs and locks in leaks, whether you're in or out of the water. When washed with detergent, blood releases through the top layer for a fresh, clean suit.

Top Layer

A silky-smooth top layer that feels just like a regular swimsuit.

4.4
Rated 4.4 out of 5 stars
Based on 39 reviews
82%would recommend these products
ComfortRated 4.2 on a scale of 1 to 5
FitRated -0.4 on a scale of minus 2 to 2
SupportRated 4.4 on a scale of 1 to 5
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Height
Current Band Size
Current Band Size
Current Cup Size
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39 reviews
  • Rated 5 out of 5 stars
    2 days ago
    Everything I wanted and more

    The fit of this is everything I had hoped it would be and gave me so much confidence!! While I’ve been working to lose some baby weight, I also haven’t seen as drastic of results as I was hoping for before my family beach vacation coming up. I ordered this because I loved the colour way and strapless neckline - plus one piece. Needless to say I feel so amazing in this and love how it looks on me!

    AH
    Alexandra H.
    Verified Buyer
    Reviewing
    Sculpt Ruched One Piece Swimsuit
  • Rated 5 out of 5 stars
    6 days ago
    Great

    Got the Autumn Court fabric and it's gorgeous!

    I had to return for a larger size. I used the size chart to order but still found my alleged size too small, but the exchange was fast and easy.

    Bathing suit is flattering and stays up well even without the straps

    AF
    Alana F.
    Verified Buyer
    Reviewing
    Sculpt Ruched One Piece Swimsuit
  • Rated 4 out of 5 stars
    1 week ago
    Swimsuit

    I really like the swimsuit but I find it is a bit snug. I am hoping with some use it will be a bit more comfortable.

    It looks great on!

    BB
    Brenda B.
    Verified Buyer
    Reviewing
    Sculpt Ruched One Piece Swimsuit
  • Rated 4 out of 5 stars
    2 weeks ago
    Great Swimsuit!

    Great suit, very flattering. Deducting one star because while the concept of having convertible straps so you can wear in many styles is great, the execution is slightly lacking - I find every time I'm putting the suit on or taking off, the straps come unhooked and they are very difficult to re-hook especially if they've come undone in the back.

    LB
    Lindsay B.
    Verified Buyer
    Reviewing
    Sculpt Ruched One Piece Swimsuit
  • Rated 3 out of 5 stars
    2 months ago
    Runs small and cream fabric is see-through

    It’s a nice fit and flattering, I sized up to a L. Unfortunately, it’s see-though.

    L
    Lisa
    Verified Reviewer
    Reviewing
    Sculpt Ruched One Piece Swimsuit
  • Rated 5 out of 5 stars
    3 months ago
    Swimsuit

    Very comfortable. Should have sized down. Love the quality of the swimsuits

    YS
    Yvette S.
    Verified Buyer
    Reviewing
    Sculpt Ruched One Piece Swimsuit
  • Rated 5 out of 5 stars
    4 months ago
    Fits great Looks Great

    Love how this swimsuit looks and the versatility of wearing straps or no straps.

    K Profile picture for Knix
    Knix
    4 months ago

    Hey Leanne!

    Thanks so much for the amazing review! We're so happy you're loving the versatile strap options and how great it looks on you!

    Team Knix

    LA
    Leanne A.
    Verified Buyer
    Reviewing
    Sculpt Ruched One Piece Swimsuit
  • Rated 5 out of 5 stars
    5 months ago
    Great fit

    I love this swimsuit! It has a flattering fit and works well for someone with a larger chest.

    DH
    Danika H.
    Verified Buyer
    Reviewing
    Sculpt Ruched One Piece Swimsuit
  • Rated 5 out of 5 stars
    6 months ago
    Sculpt Ruched One Piece Swimsuit

    it looks gorgeous and fits perfectly!

    EG
    Eileen G.
    Verified Buyer
    Reviewing
    Sculpt Ruched One Piece Swimsuit
  • Rated 5 out of 5 stars
    6 months ago
    Beautiful, but I had to go up one full size

    I got the floral one and it is stunning. I am 5’4”, 34DD and 135 lbs. I always wear a Knix M+ in everything I have ordered, but because of the compression I had to exchange it for a L+. It really is beautiful!

    AL
    Angela L.
    Verified Buyer
    Reviewing
    Sculpt Ruched One Piece Swimsuit
  • Rated 1 out of 5 stars
    6 months ago
    Title: Missing Size-Inclusive Photos

    I’m really disappointed that Knix no longer shows swimsuits on models wearing size XL and above. You used to offer inclusive photos, and it made a big difference when choosing what to buy. I already emailed customer service about this, but nothing changed. It’s frustrating to feel that larger bodies are no longer represented. I hope you bring back inclusive model photos.

    NC
    Nathalie C.
    Verified Reviewer
    Reviewing
    Sculpt Ruched One Piece Swimsuit
  • Rated 5 out of 5 stars
    7 months ago
    Sculpt one piece

    Love the ruching it is very flattering.

    JE
    Jan E.
    Verified Buyer
    Reviewing
    Sculpt Ruched One Piece Swimsuit

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