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Swim One Shoulder One-Piece in Cobalt
Swim One Shoulder One-Piece in Cobalt
Swim One Shoulder One-Piece in Cobalt
Swim One Shoulder One-Piece in Cobalt
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Swim One Shoulder One-Piece in Cobalt
Swim One Shoulder One-Piece in Cobalt
Swim One Shoulder One-Piece in Cobalt
Swim One Shoulder One-Piece in Cobalt

Swim One Shoulder One-Piece in Cobalt

4.5
Rated 4.5 out of 5 stars
17 Reviews

Negative. Does. Swim.


A chic and refined one piece with an asymmetrical single shoulder and delicate split straps Two layers of our smoothing stretch nylon keeps everything in place.

Free U.S. shipping on orders over $100. Easy returns.

Fit

  • Size Chart
  • Use this as a guide. Preference is a huge factor — with a one piece, sizing can vary based on the length of your torso, in addition to your overall frame. If you're taller or have a proportionally longer torso, you may want to size up.
  • Double layered for extra hold and support
  • Two narrow rouleau cami straps wrap around one shoulder and across the back
  • Retro leg hits high on the hip
  • Cheeky coverage bum
  • Ksenia is 5'9", dress size 2, wearing our XS

Fabric + Care

  • Size Chart
  • Ultra smoothing stretch nylon hugs the body like gentle shapewear
  • 50% Nylon and 50% Elastane
  • Lining: 80% Nylon and 20% Elastane
  • Hand wash, dry flat

FAQ

  • Price-slashed, Annual Sale items with a red SALE tag are direct size exchange only (no refunds). Full-priced items purchased with the 20% off discount are eligible for refund, credit or exchange. Click here for more info on our Sale policies.
  • All full-priced, unworn items, with tags attached and in their original packaging are eligible for return or exchange within 30 days of placing your order.
  • Please note, packs must be returned in full. We do not accept partial returns of packs.
  • Want to know our full returns policies? Here you go.
  • Want more info about shipping, materials or care instructions? Here!

    Q’s on fit or sizing? Email us at hello@negativeunderwear.com
4.5
Rated 4.5 out of 5 stars
Based on 17 reviews
17 reviews
  • michael c.
    Verified Buyer
    10 seconds ago
    Rated 5 out of 5 stars
    great piece

    girlfriend loved it

  • Megan J.
    Verified Buyer
    2 months ago
    Rated 4 out of 5 stars
    Falling out of it

    I love the material and the fit but the slightest bit of movement pulls the top down so I’m constantly having to readjust and pull it up. I’m active in my swimsuits so I will save this suit for pool side, kid- free days.

  • gary j.
    Verified Buyer
    2 months ago
    Rated 5 out of 5 stars
    One piece

    Great fit and I love the fabric.

  • Jennifer Kurtley C.
    Verified Buyer
    3 months ago
    Rated 5 out of 5 stars
    Love the feel

    High quality swimwear, thin enough to be used as a body suite. Love the color and the look.

  • Teal N.
    Verified Buyer
    4 months ago
    Rated 5 out of 5 stars
    Perfect Color and Great Fit

    10/10 for this suit. Love Negative Underwear.

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Detail view of Swim One Shoulder One-Piece in Cobalt for sizer