Sunset Boutique · Onesie

The Seamless Long Onesie — Black

$88.00
or 4 interest-free payments of $22.00 with Afterpay
Color Jet Black
Size Select a size
Free US shipping
Easy exchanges
Secure checkout

Our most-requested piece. The full-length seamless onesie in jet black sculpts from shoulder to ankle in one clean line — no waistband break, no shifting, nothing to think about but the movement.

Fit & feel: Snug throughout with a scoop neck and thin straps. Built-in light bust support; pair with a Bra Top for medium-impact training.

Soft Strength fabric: 92% nylon, 8% spandex. Seamless ribbed knit, four-way stretch, moisture-wicking, opaque.

Care: Wash cold with like colors. Lay flat to dry. No bleach, tumble dry or fabric softener.

Wear it with: A cropped jacket, or the Seamless Bra Top in Black layered over for extra support.

Size: XS (US 00–0) to L (US 6–8). Onesies fit body-close — size up if between sizes, and check both bust and inseam.

Designed in Miami. Made in Colombia.

Details & Fit
  • True to size — size down for stronger compression
  • Ribbed seamless construction for a second-skin feel
  • Four-way stretch with superior recovery
Fabric & Construction
  • 92% Nylon, 8% Spandex
  • Circular knit — no cut panels, no seam chafe
  • Sweat-wicking and quick-dry finish
Care Instructions
  • Wash cold with like colors
  • Do not bleach or use fabric softener
  • Lay flat to dry — no tumble drying
  • Do not iron directly on fabric
Shipping & Returns
  • Free standard shipping on all US orders
  • Delivery in 7–10 business days
  • Refunds within 14 days of delivery ($6.95 return fee)
  • Free exchanges or store credit within 30 days