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The Onesie / Black-Crème

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COLOR Black-Crème

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Made to take you places - meet the Onesie. This tank-style onesie features seam detailing that contours and defines your curves. With adjustable contrast straps, low neckline and 28" inseam, this onesie offers maximum comfort and support. Made sustainably with 437 cloud™ technology, giving it a second-skin feel you’ll love. Wear it solo or pair with any 437 item like the Zip Hoodie.



  • Classic tank style active onesie with flattering seam details to define your waist and bum
  • Front waistline as our signature Kenzie bottoms and back wasting line as signature leggings
  • 28” inseam
  • Adjustable elastic contrast straps and low straight neckline
  • White 437 logo on front centre
  • Curve-hugging fabric
  • 437 cloud™ is a moisture wicking fabric, sustainably sourced and made using recycled Polyester


Size & Fit

  • True to size
  • If you are between sizing we recommend sizing down
  • 28”inseam
  • Model 1 is wearing size XS - Bust 30" (76cm) , Waist 24" (61cm), Hips 34" (86cm), Height 5'6 (167cm)
  • Model 2 is wearing size XS - Bust 35" (89cm), Waist 25" (64cm), Hips 35" (89cm), Height 5'5 (165cm)

Materials & Care

  • 78% Recycled Polyester, 22% Spandex
  • Care: Machine wash cold. Dry flat, do not iron

Due to the nature of knit performance fabric process please allow for slight variations in stretcth, softness and color


437 cloud™ Fabric

  • Made from mills recycled post industrial fabric waste
  • Moisture wicking - pulls sweat to outer layer quickly


  • Traceable yarn source, Oeko-Tex certified
  • Lower carbon emissions during dye process
  • Lower water ratio dyeing machine 
  • Finishing machines are powered by natural gas instead of coal



We offer free shipping on all orders over $150 USD. Please see Shipping and Delivery page for the delivery time to your location.


Orders will be packed within 1-3 days of purchasing. Shipping time is dependent on location. We accept all regular priced merchandise within 30 days of the order being placed for a refund on your original form of payment or store credit via gift card. If a refund is selected, a $15 USD restock fee will be deducted from your return amount. If a store credit is selected, your gift card will be issued for the full value of your returned suits in USD and will not expire. Discounts of 25% or more are considered final sale. Please see our return policy for more details:


The Onesie / Black-CrèmeThe Onesie / Black-CrèmeThe Onesie / Black-CrèmeThe Onesie / Black-Crème