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Adults & kids · Matching family sets

The Cozy Onesie

Ultra-soft plush character onesie with a 3D hood. Mix adult and kids sizes in any bundle.

4.5Read customer reviews
5,958+ sold worldwide
Shopping for the family? Pick a bundle, then choose an adult or kids size for each onesie.
Find your size (adults & kids)Usually wear Small? Choose Medium+

Our sizing runs one size smaller than usual. Medium fits like a standard Small, Large like a Medium, and so on. Usually wear a Small? Choose Medium. Between sizes on the chart? Choose by weight.

Adults

The Cozy Onesie size guide by height and weight

Kids: relaxed, roomy fit. Between sizes? Choose the larger one.

 
 
 
Order by Thursday 10 December for Christmas deliveryFree tracked shipping on every order
Free tracked shippingWorldwide
30-day guaranteeLove it or your money back
Secure checkoutPayPal, Apple Pay, Klarna
Free giant comb with every onesie
Cloud-soft fleeceFeels like a blanket you can wear
Relaxed, roomy fitMade for lounging in comfort
3D character hoodWith a matching face pocket
A gift they'll loveChristmas, birthdays & film nights

The Cozy Onesie – Vuxna & barn

Ordinarie pris £39.90
Ordinarie pris £39.90 Försäljningspris £59.90
REA Slutsåld
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Loved by thousands of cosy homes

Real customers, real evenings. This is what The Cozy Onesie looks like at home.

4.5/5average rating
30 daysmoney-back guarantee
Verified customer
Customer favourite
Kids edition
Customer wearing The Cozy Onesie
Real customer
Close-up of the ultra-soft plush fleece
The feel

Like wearing your favourite blanket

Thick, ultra-soft plush fleece that stays warm on the coldest evenings, with a relaxed, roomy cut that never feels tight.

  • Ultra-soft plush fleece
  • Hidden zip, easy on and off
  • Machine washable
The 3D character hood
The look

A character everyone smiles at

The oversized 3D hood with big eyes, plush lips and shaggy hair turns any night in into a moment. And yes, there's a matching face pocket.

  • 3D character hood and face pocket
  • 7 colours for adults, 5 for kids
  • Free giant comb to keep it fluffy
Matching adult and kids onesies
For the whole family

Matching sets for grown-ups and kids

Adult sizes M–4XL and kids sizes 2–15 years, all on this page. Mix any sizes in a bundle and save up to 25%.

  • Mix adult and kids sizes in one bundle
  • Perfect for Christmas morning photos
  • One order, one delivery

Find your perfect size

Getting the size right matters. Here's everything you need.

Adults (M–4XL)

M = S

Our sizing runs one size small. Medium fits like a standard Small, Large like a Medium, and so on. If your height and weight suggest different sizes, choose by weight.

The Cozy Onesie size guide by height and weight

Kids (2–15 years)

Roomy fit

Kids onesies are cut generously for comfort. Between sizes? Choose the larger one, and they'll get more wear out of it.

Not just another onesie

Here's what you get with The Cozy Onesie.

The Cozy OnesieTypical onesie
3D character hood + face pocket✓✕
Thick ultra-soft plush fleece✓Thin
Adult and kids sizes in one order✓✕
Free giant comb✓✕
Free tracked shipping✓Often extra
30-day money-back guarantee✓Varies
The Cozy Onesie as a gift
The gift

The present they'll actually wear

It gets an instant laugh on Christmas morning, then gets worn every single night after.

🎄 Order by Thursday 10 December for Christmas delivery
  • Dispatched within 1–2 business days
  • Free tracked shipping worldwide
  • 30-day money-back guarantee

Questions? We've got you

Will it arrive before Christmas?
Yes. Order by Thursday 10 December. Orders are dispatched within 1–2 business days and usually arrive in 5–8 business days, with free tracking.
Can I mix adult and kids sizes in a bundle?
Yes. Choose any bundle, then pick a colour and size for each onesie, adult or kids. The bundle discount applies to the whole set.
Which size should I choose?
Adult sizing runs one size small: Medium fits like a standard Small. Usually wear a Small? Choose Medium. If height and weight point to different sizes, choose by weight. Kids onesies are roomy; between sizes, choose the larger.
What if it doesn't fit or I don't love it?
You're covered by our 30-day money-back guarantee. Contact us within 30 days of delivery for a refund or replacement.
How do I wash it?
Machine wash cold on a gentle cycle and air dry or tumble dry on low. Brush with the giant comb to keep it fluffy.
How can I pay?
Visa, Mastercard, American Express, PayPal, Apple Pay, Google Pay, Shop Pay and Klarna.

Ready for the cosiest night in?

Free tracked shipping · 30-day guarantee · Free giant comb