• Two people wearing colorful unicorn onesies against a white background
  • Two people wearing colorful unicorn-themed onesies on a white background. Full body image
  • A man wearing a colorful adult onesie designed as a rainbow unicorn. The onesie features a vibrant gradient of pastel colors, a golden horn, and playful unicorn details, perfect for cozy lounging or costume parties. Full body image and man is looking at the floor.
  • A man wearing a colorful adult onesie designed as a rainbow unicorn. The onesie features a vibrant gradient of pastel colors, a golden horn, and playful unicorn details, perfect for cozy lounging or costume parties. The hood is lying flat on his back.
  • A man wearing a colorful adult onesie designed as a rainbow unicorn. The onesie features a vibrant gradient of pastel colors, a golden horn, and playful unicorn details, perfect for cozy lounging or costume parties. The hood is lying flat on his back. Full body image.
  • A man wearing a colorful adult onesie designed as a rainbow unicorn. The onesie features a vibrant gradient of pastel colors, a golden horn, and playful unicorn details, perfect for cozy lounging or costume parties. The hood is lying flat on his back. View from the back.
  • A man wearing a colorful adult onesie designed as a rainbow unicorn. The onesie features a vibrant gradient of pastel colors, a golden horn, and playful unicorn details. Close-up image pocket.
  • A man wearing a colorful adult onesie designed as a rainbow unicorn. The onesie features a vibrant gradient of pastel colors, a golden horn, and playful unicorn details, perfect for cozy lounging or costume parties. The hood is lying flat on his back. Close-up image upper body side view.
(13 reviews)

Unicorn
Adult Onesie

Color: Unicorn
$44.99
$44.99
Sale Sold out
Size: XS

Features Onesies:

  • Easy to wash and iron
  • Soft and comfortable to wear
  • Brushed fleece for extra softness
  • Fabric: 100% polyester
  • Washing instructions: Do not tumble dry, Machine Washable, Do not bleach
  • Includes: Onesie
  • Onesie: Hood, Side pockets, Kangaroo pocket at front, Brushed fleece inside
  • Model Size: Our model is 6'1.5" / 186 cm tall and is wearing size M

Everyone else picks an ordinary costume. Unicorn onesie brings the magic without the effort.

What this is

A colorful Unicorn adult onesie with a character hood and horn, in soft 100% polyester with a brushed fleece interior. Unisex sizes XS to 2XL.

Why this onesie works

  • Eye-catching unicorn design with horn and mane detail for instant fantasy flair.
  • Brushed fleece interior for warm, breathable, all-day comfort.
  • Relaxed unisex fit with an easy front zip for quick on and off.
  • Machine washable, so it's easy to keep clean after repeat wear.

Good for

  • Halloween
  • Costume parties and themed events
  • Festivals and celebrations
  • Lounging at home or sleepovers

Specifications

Included Onesie
Design Unicorn character hood with horn
Fabric 100% polyester, brushed fleece inside
Details Hood, front zip closure, side pockets, kangaroo front pocket
Fit Unisex relaxed fit
Available sizes XS, S, M, L, XL, 2XL
Care Machine washable, do not tumble dry, do not bleach

Frequently asked questions

Can this onesie be machine washed?

Yes. Do not tumble dry and do not bleach.

Is this onesie available in other animal designs?

Yes, it's also available in the Animal Onesie collection, alongside characters like Panda and Shark.
Two people wearing colorful unicorn onesies against a white background
Unicorn
$44.99
$44.99

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An image of three man standing next to each other. The man on the left is wearing a Mr. Pink suit, the man in the middle a Funky Fade suit and the man on the right a Flaminguy suit. An image of three man standing next to each other. The man on the left is wearing a Mr. Pink suit, the man in the middle a Funky Fade suit and the man on the right a Flaminguy suit.

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: 4.076923 / 5 from 13 reviews.

AI Generated Review Summary

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Review highlights

Reviews

Dinosaur… rawr 🦖

"I have been looking for the perfect dino onesie, for quite some time, and had always struggled to find one that I really liked… until I came across this adorable option :D I really appreciated the website’s in depth sizing information, and the speed of delivery (with this being purchased for an event) Customer service is great, too! Upon its arrival, it was packaged nicely, and securely, and the onesie itself is so very soft, and easy to put on (which is very important to me, as an autistic and dyspraxic person) The only thing that I think would make it better would be the option to pay via PayPal All this to say - thank you, OppoSuits! I am a very happy customer! :3"

— Ryan W. (5/5)

Nicely packed and pretty good

"Nicely packed and pretty good quality. I'm happy with my purchase"

— Ewelina R. (5/5)

Sehr zufrieden

"Sehr flauschig und sehr gemütlich! Ich bin 1,59 m und trage Größe 40/42, die Größe XS war komplett ausreichend!"

— Stephanie K. (5/5)

Tolles Produkt, sehr guter Stoff,

"Tolles Produkt, sehr guter Stoff, schnelle Lieferung"

— Colombina M. (5/5)

Excellent is an UNDERSTATEMENT

"Everyone adored our costume—the giraffe. It was so unique and looked great. Quality-wise, it was definitely worth every penny we spent."

— Gem P. (5/5)

Ok

"It’s cute and fits well, but one of the flippers started tearing off just 3 days in. Also would be helpful to have Velcro or something to pin up the flippers when not wearing. Kind of dangle and get in the way."

— Mina S. (3/5)

bad fit/ bad shape

"bad fit/ bad shape"

— Erik A. (1/5)

Great product, very warm!

"Just what I wanted for a good price, but, man is it toasty! At least you won't be too cold."

— Matt K. (5/5)

Je ne l’es pas encore

"Je ne l’es pas encore reçu…"

— Sophie C. (1/5)

Material macht einen guten

"Material macht einen guten Eindruck. Fühlt sich alles bequem an und passt. Wenn an den Seitentaschen Reißverschluss wäre, wäre top."

— Anonym (4/5)

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