• Child wearing a red Knuckles onesie with a hood on a white background
  • Person wearing a red Knuckles onesie with a hood on a white background. Full body image
  • Red Knuckles onesie with animal ears on a white background. View from the back
  • Red Knuckles onesie with a brand logo on a white background
  • Person wearing a red Knuckles onesie with a hood and face design on a white background
(20 reviews)

Knuckles
Kids Onesie

Color: Knuckles
$49.99
$49.99
Sale Sold out
Size: 2-4Y

Features licensed Onesies:

  • Easy to wash and iron
  • Soft and comfortable to wear
  • Brushed fleece for extra softness
  • Officially Licensed
  • Fabric: 100% polyester
  • Washing instructions: Do not tumble dry, Machine Washable, Do not bleach
  • Includes: Onesie
  • Onesie: Hood, Side pockets, Brushed fleece inside
  • Model Size: Our model is 4'10" / 148 cm tall and is wearing size 10-12Y

Everyone else wants the fast one. Knuckles' kids onesie is for the ones who'd rather punch through walls.

What this is

An officially licensed Sonic the Hedgehog Knuckles kids onesie, with a vibrant red character hood, white chest patch and tail detail, in soft 100% polyester with a brushed fleece interior. Sizes 2-4Y to 14-16Y.

Why this onesie works

  • Officially licensed Sonic the Hedgehog design with Knuckles' signature red color and soft spike hood.
  • Brushed fleece interior for warm, breathable, all-day comfort.
  • White chest patch and tail detail for an instantly recognizable look.
  • Machine washable, so it's easy to keep clean after repeat wear.

Good for

  • Halloween
  • Themed birthday parties
  • Gaming events and dress-up days
  • Sleepovers

Specifications

Included Onesie
License Officially licensed Sonic the Hedgehog product
Design Knuckles character hood with soft spikes, white chest patch, tail detail
Fabric 100% polyester, brushed fleece inside
Details Hood, front zip closure, 2 side pockets
Available sizes 2-4Y, 6-8Y, 10-12Y, 14-16Y
Care Machine washable, do not tumble dry, do not bleach

Frequently asked questions

Is this officially licensed?

Yes, an officially licensed Sonic the Hedgehog product.

Can this onesie be machine washed?

Yes. Do not tumble dry and do not bleach.

Is this onesie available for adults, or as Sonic and Shadow?

Yes, it's also available as an adult onesie, and complete the crew with the Sonic the Hedgehog and Shadow kids onesies.
Also available in
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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.

Overall rating: 4.85 / 5 from 20 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["size","fit","fabric","onesie","material","quality","delivery","son"].

Review highlights

Reviews

Tolles Kostüm

"Mein Sohn wollte unbedingt als Super Mario zum Karneval gehen. Hatte dieses Kostüm dann gefunden und bestellt. Ich hatte die Hoffnung, dass es kein billiger Stoff ist. Und ich wurde nicht enttäuscht. Super bequem und fühlt sich gut an. Größengetreu"

— Diana P. (5/5)

Brilliant purchase

"7year old was excited to wear this giraffe onesie. It is cosy and warm and a good fit."

— Anne C. (5/5)

Perfect

"My kid loves it, can't get him to take it off!!"

— Jacquelynne G. (5/5)

"Fit as described and solid material/stitching. Has been worn for dress up and trick or treating. Washes well, too! Kids love it!"

— Michelle (5/5)

"Fit as described and solid material/stitching. Has been worn for dress up and trick or treating. Washes well, too! Kids love it!"

— Michelle (5/5)

Perfect !

"Perfect !"

— Annie b. (5/5)

Perfect

"Fast shipping and the outfit fit my son perfectly!"

— Deborah N. (5/5)

5 star top quality

"5 star top quality"

— Gavin F. (5/5)

Snelle levering

"Mooie onesie zoals op foto ."

— Bianca H. (5/5)

I had to guess size,

"I had to guess size, not having shopped with you before, but a 10 - 12 fitted beautifully on my 10 year old. He was delighted with it. It appears well made too. So I am a happy granny."

— Sue R. (5/5)

Q&A