• Smiling child standing front-facing, wearing a red Knuckles onesie with hood up and hands on hips. The onesie features a white chest patch and animated face on the hood.
  • Side view of a smiling child in a red Knuckles onesie with the hood up, showing white chest patch, front zipper, and side pockets.
  • Back view of a child wearing the red Knuckles onesie, showing hood with soft spikes and black printed tail details near the lower back.
  • Close-up of the red Knuckles onesie's side pocket with visible orange Opposuits label. Child's hand is placed inside the pocket.
  • Close-up of a child wearing the Knuckles onesie with the hood partially pulled over their eyes, revealing Knuckles’ embroidered facial expression.

Knuckles
Kids Onesie

Color: Knuckles
$49.99
$49.99
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  • Includes: Onesie
  • Onesie: Hood, Side pockets, Kangaroo pocket at front, Brushed fleece inside
  • Fabric: 100% polyester
  • Washing instructions: Do not tumble dry, Machine Washable, Do not bleach

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  • Model Size: Our model is 4'10" / 148 cm tall and is wearing size 10-12Y
With this red-hot Knuckles Onesie, your kid will combine Knuckles’ fierce character with the cozy features of a soft jumper. Liven up every sleep over or relax and be the most stylishly, cozy Echidna in the world!
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Quality and Fit

Look sharp, feel comfy. Our slim-fit suits are made from high-quality polyester twill—built for style and movement. Go classic or go wild—your wardrobe, your rules.