Get Cozy in Style: Discover the Ultimate One Piece Pajama

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43 products
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A man wearing a plush black onesie inspired by the popular hedgehog character Shadow, featuring spiky red and black accents on the hood, a white chest emblem, and yellow wrist details. The onesie is made from soft fleece material, offering comfort and a playful design for cosplay, lounging, or themed events. The person smiles while adjusting the hood, showcasing the character's recognizable face and bold design. Perfect for fans of gaming or animated characters. A man wearing a plush black onesie inspired by the popular hedgehog character Shadow, featuring spiky red and black accents on the hood, a white chest emblem, and yellow wrist details. The onesie is made from soft fleece material, offering comfort and a playful design for cosplay, lounging, or themed events. The person smiles while adjusting the hood, showcasing the character's recognizable face and bold design. Perfect for fans of gaming or animated characters.
SOLD OUT

Shadow

$49.99
$49.99
Man and Woman wearing blue pluche Cookie Monster Adult onesie for adults. Standing next to each other, holding hood with hands. Man and Woman wearing blue pluche Cookie Monster Adult onesie for adults. Standing next to each other, holding hood with hands.

Cookie Monster

$49.99
$49.99
Man wearing a multicolor onesie Man wearing a multicolor onesie

CrissCrosser

$47.99
$47.99
Man wearing black onesie with yellow smiley print Man wearing black onesie with yellow smiley print

Smiley Original®

$20.99
$20.99
Man and Woman wearing red and blue, Unisex Adult Onesie with Super Mario theme. Onesie resembles the Super mario outfit. Man and Woman wearing red and blue, Unisex Adult Onesie with Super Mario theme. Onesie resembles the Super mario outfit.

Mario

$49.99
$49.99
A man and woman wearing a playful blue and beige Sonic the Hedgehog-themed adult onesie from OppoSuits. The cozy onesie features a zip-up front and an attached hood designed to resemble Sonic’s iconic face, complete with ears and an expressive gaze. The blue body of the suit contrasts with a beige belly, mimicking Sonic's classic look. A man and woman wearing a playful blue and beige Sonic the Hedgehog-themed adult onesie from OppoSuits. The cozy onesie features a zip-up front and an attached hood designed to resemble Sonic’s iconic face, complete with ears and an expressive gaze. The blue body of the suit contrasts with a beige belly, mimicking Sonic's classic look.

Sonic the Hedgehog™

$49.99
$49.99
A man and a woman are dressed in a Luigi-themed onesie. The outfit looks as a bright green hoodie with an "L" symbol on the hood and blue overalls with large yellow buttons on the straps. The overall design mimics the look of the popular video game character Luigi, with contrasting green and blue colors. The background is plain, putting focus on the costume. A man and a woman are dressed in a Luigi-themed onesie. The outfit looks as a bright green hoodie with an "L" symbol on the hood and blue overalls with large yellow buttons on the straps. The overall design mimics the look of the popular video game character Luigi, with contrasting green and blue colors. The background is plain, putting focus on the costume.

Luigi

$49.99
$49.99
Man wearing blue Christmas onesie Man wearing blue Christmas onesie

Festivity Blue

$59.99
$59.99
Man wearing jaguar/ panther print onesie Man wearing jaguar/ panther print onesie

The Jag

$59.99
$59.99
Kid wearing blue pluche Cookie Monster onesie Kid wearing blue pluche Cookie Monster onesie

Cookie Monster

$39.99
$39.99
Kid wearing red pluche Elmo onesie Kid wearing red pluche Elmo onesie

Elmo

$39.99
$39.99
Man wearing orange onesie Man wearing orange onesie

The Orange

$59.99
$59.99
A man and a woman are dressed in a red Elmo-themed onesie. The overall design mimics the look of the Sesame Street character Elmo. The background is plain, putting focus on the costume. A man and a woman are dressed in a red Elmo-themed onesie. The overall design mimics the look of the Sesame Street character Elmo. The background is plain, putting focus on the costume.

Elmo

$49.99
$49.99
Boy wearing Kids Onesie with Luigi Super Mario print. Boy wearing Kids Onesie with Luigi Super Mario print.

Luigi

$39.99
$39.99
A kid wearing a plush black kids onesie inspired by the popular hedgehog character Shadow, featuring spiky red and black accents on the hood, a white chest emblem, and yellow wrist details. The onesie is made from soft fleece material, offering comfort and a playful design for cosplay, lounging, or themed events. The person smiles while the hood is on his head. Perfect for fans of gaming or animated characters. A kid wearing a plush black kids onesie inspired by the popular hedgehog character Shadow, featuring spiky red and black accents on the hood, a white chest emblem, and yellow wrist details. The onesie is made from soft fleece material, offering comfort and a playful design for cosplay, lounging, or themed events. The person smiles while the hood is on his head. Perfect for fans of gaming or animated characters.

Shadow

$39.99
$39.99
Boy wearing kids onesie with Super Mario print. Boy wearing kids onesie with Super Mario print.

Mario

$39.99
$39.99
Boy wearing blue Sonic the Hedgehog Kids Onesie Boy wearing blue Sonic the Hedgehog Kids Onesie

Sonic the Hedgehog™

$39.99
$39.99
man wearing green onesie man wearing green onesie

Glorious Green

$47.99
$47.99
Man wearing grey onesie Man wearing grey onesie

Gentle Grey

$59.99
$59.99
Kid wearing Spongebob onesie Kid wearing Spongebob onesie

SpongeBob™

$39.99
$39.99
Boy wearing red Sonic Knuckles Kids Onesie. Boy wearing red Sonic Knuckles Kids Onesie.

Knuckles

$39.99
$39.99
Man wearing Navy blue onesie Man wearing Navy blue onesie

Navy Royale

$59.99
$59.99
A man and women are 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 men and women both have their hood on. A man and women are 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 men and women both have their hood on.

Unicorn

$39.99
$39.99
A man and women are wearing an orange adult onesie designed as a red cat onesie. The onesie features a hood resembling a cat's head, and cat details, perfect for cozy lounging or costume parties. Both have the hood on their head. A man and women are wearing an orange adult onesie designed as a red cat onesie. The onesie features a hood resembling a cat's head, and cat details, perfect for cozy lounging or costume parties. Both have the hood on their head.

Red Cat

$39.99
$39.99
A man and women are wearing a bright red lobster-themed adult onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events. including stitched gloves as claws. Both are wearing their hood on their heads. A man and women are wearing a bright red lobster-themed adult onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events. including stitched gloves as claws. Both are wearing their hood on their heads.

Lobster

$39.99
$39.99
A smiling man and woman are wearing a brown and yellow adult onesie designed as a giraffe. The onesie features a hood resembling a Giraffes head, and giraffe details, perfect for cozy lounging or costume parties. A smiling man and woman are wearing a brown and yellow adult onesie designed as a giraffe. The onesie features a hood resembling a Giraffes head, and giraffe details, perfect for cozy lounging or costume parties.

Giraffe

$39.99
$39.99
A man and women are wearing a grey and white shark adult onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events. Both are wearing their hoods on their head. A man and women are wearing a grey and white shark adult onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events. Both are wearing their hoods on their head.

Shark

$39.99
$39.99
A smiling kid is wearing a white, pink, blue and yellow kids onesie designed as a unicorn. The Unicorn onesie features a hood resembling a unicorn head and other playfull details A smiling kid is wearing a white, pink, blue and yellow kids onesie designed as a unicorn. The Unicorn onesie features a hood resembling a unicorn head and other playfull details

Unicorn

$29.99
$29.99
A cheerful kid wearing a brown kids onesie designed as a walrus. The onesie features a hood with fangs, stitched gloves resembling paws, and playful walrus details, perfect for cozy lounging or costume parties. A cheerful kid wearing a brown kids onesie designed as a walrus. The onesie features a hood with fangs, stitched gloves resembling paws, and playful walrus details, perfect for cozy lounging or costume parties.

Walrus

$29.99
$29.99
A smiling kid is wearing a brown and yellow kids onesie designed as a giraffe. The onesie features a hood resembling a Giraffes head. A smiling kid is wearing a brown and yellow kids onesie designed as a giraffe. The onesie features a hood resembling a Giraffes head.

Giraffe

$29.99
$29.99
A man wearing a blue and white plush onesie designed to look like Snorlax, a character from Pokémon. The onesie has a hood featuring Snorlax's face and ears, and the front has a white belly section with a zipper down the middle, topped with a small Poké Ball detail. The man has his hands in the front pockets and is standing against a plain white background. A man wearing a blue and white plush onesie designed to look like Snorlax, a character from Pokémon. The onesie has a hood featuring Snorlax's face and ears, and the front has a white belly section with a zipper down the middle, topped with a small Poké Ball detail. The man has his hands in the front pockets and is standing against a plain white background.
NEW

Snorlax Onesie

$49.99
$49.99
Child wearing a playful unisex kids onesie designed as a red-orange cat, featuring a hood with a cartoon cat face, ears, and a light beige belly panel, making a silly face against a plain background. Child wearing a playful unisex kids onesie designed as a red-orange cat, featuring a hood with a cartoon cat face, ears, and a light beige belly panel, making a silly face against a plain background.
SOLD OUT

Red Cat

$29.99
$29.99
Child wearing a cozy unisex kids onesie designed as a lemur, featuring grey and white plush fabric, a hood with a cartoon lemur face and ears, and a playful banana print on the pocket. Child wearing a cozy unisex kids onesie designed as a lemur, featuring grey and white plush fabric, a hood with a cartoon lemur face and ears, and a playful banana print on the pocket.
SOLD OUT

Lemur

$29.99
$29.99
A smiling kid wearing a panda-themed kids onesie. This cozy onesie features black and white panda colors with a playful hood showcasing panda ears and a cute face. Perfect for lounging or fun costume occasions. A smiling kid wearing a panda-themed kids onesie. This cozy onesie features black and white panda colors with a playful hood showcasing panda ears and a cute face. Perfect for lounging or fun costume occasions.
SOLD OUT

Panda

$29.99
$29.99
A smiling kid is wearing a brown kids onesie designed as an otter. The onesie features a hood with ears, a cute face, and playful otter details. A smiling kid is wearing a brown kids onesie designed as an otter. The onesie features a hood with ears, a cute face, and playful otter details.
SOLD OUT

Otter

$29.99
$29.99
A kid is wearing a grey and white shark kids onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events. A kid is wearing a grey and white shark kids onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events.

Shark

$29.99
$29.99
A kid is wearing a green dinosaur kids onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events. A kid is wearing a green dinosaur kids onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events.

Dinosaur

$29.99
$29.99
A kid is wearing a bright red lobster-themed kids onesie featuring playful hood details and cozy, soft material. A kid is wearing a bright red lobster-themed kids onesie featuring playful hood details and cozy, soft material.

Lobster

$29.99
$29.99
A cheerful man and women are wearing a brown adult onesie designed as a walrus. The onesie features a hood with fangs, stitched gloves resembling paws, and playful walrus details, perfect for cozy lounging or costume parties. The hood are on their heads. A cheerful man and women are wearing a brown adult onesie designed as a walrus. The onesie features a hood with fangs, stitched gloves resembling paws, and playful walrus details, perfect for cozy lounging or costume parties. The hood are on their heads.

Walrus

$39.99
$39.99
A man and woman are wearing a panda-themed adult onesie. This cozy onesie features black and white panda colors with a playful hood showcasing panda ears and a cute face. Perfect for lounging or fun costume occasions. A man and woman are wearing a panda-themed adult onesie. This cozy onesie features black and white panda colors with a playful hood showcasing panda ears and a cute face. Perfect for lounging or fun costume occasions.
SOLD OUT

Panda

$39.99
$39.99
A smiling man and a woman are wearing a brown adult onesie designed as an otter. The onesie features a hood with ears, a cute face, and playful otter details, perfect for cozy lounging or costume parties. A smiling man and a woman are wearing a brown adult onesie designed as an otter. The onesie features a hood with ears, a cute face, and playful otter details, perfect for cozy lounging or costume parties.
SOLD OUT

Otter

$39.99
$39.99
A man and women are wearing a grey and white lemur adult onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events. Including black and white tail. The hood are on their heads. A man and women are wearing a grey and white lemur adult onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events. Including black and white tail. The hood are on their heads.
SOLD OUT

Lemur

$39.99
$39.99
A man and woman are wearing a green dinosaur adult onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events. A man and woman are wearing a green dinosaur adult onesie featuring playful hood details and cozy, soft material, perfect for lounging or costume events.

Dinosaur

$39.99
$39.99

When it comes to comfort, warmth, and playful vibes, nothing beats a one piece pajama. Whether you're lounging at home, heading to a themed party, or just looking for a fun way to stay warm during your sleep, a one piece pajama combines everything you love about comfortwear with a dash of bold personality. It’s not just sleepwear—it’s a full-on vibe.

What Is a One Piece Pajama?

A one piece pajama (also known as a onesie) is an all-in-one garment that covers you from shoulders to ankles—sometimes even with a hood or footies for extra coziness. Originally popular as sleepwear, the one piece pajama has transformed into a go-to choice for lazy weekends, festive gatherings, and even costume parties. Thanks to its easy zip-up design and relaxed fit, it offers unmatched comfort without sacrificing style.

Why Everyone Loves a One Piece Pajama

Let’s be real: pajamas are great, but a one piece pajama takes it to the next level. No more mismatched tops and bottoms, no more adjusting your waistband at night—it’s just one smooth, comfy experience. The soft materials keep you warm during chilly nights, and the playful designs let your personality shine, even in your downtime.

Whether you're binge-watching your favorite show, joining a slumber party, or spending a lazy Sunday morning with coffee in hand, a one piece pajama has your back (and your front, and your legs... you get the idea).

Fun for Everyone

One of the best things about a one piece pajama is that it’s for everyone. From adults to kids, from chill homebodies to party animals—there’s a style and fit for every type of pajama fan. You can keep it classic with subtle patterns and solid colors or go all-out with bold prints, funky themes, or character-inspired designs. At OppoSuits, we believe sleepwear can be just as fun and expressive as your daywear. So don't be surprised if our upcoming one piece pajama collection features wild patterns, bright colors, or unexpected twists that turn bedtime into a party.

The Perfect Gift

Looking for a gift that’s guaranteed to bring smiles? A one piece pajama is always a win. It's cozy, fun, and practical—perfect for holidays, birthdays, or those "just because" moments. And because they’re available in unisex fits and a range of sizes, it’s an easy choice that doesn’t require guessing someone's favorite brand or style.

Want to level up your gift game? Pair it with fluffy slippers, a sleep mask, or a cozy blanket for the ultimate self-care package. You’re welcome.

Not Just for Bedtime

Let’s be honest—some nights, your one piece pajama might not even make it to bed. They’re perfect for movie marathons, pajama parties, Halloween costume moments, or even winter outings when layered right. Comfortwear has officially made its way into streetwear, and we’re totally here for it. Plus, if you’re planning a group getaway or team event, matching one piece pajamas can be a hilarious and memorable touch. Picture the squad in coordinating looks, sipping hot cocoa and snapping pics—it doesn’t get more iconic than that.

Coming Soon to OppoSuits

You already know we love bold prints, head-turning colors, and standout styles. So it only makes sense that our upcoming one piece pajama line will take cozywear to the next level. Stay tuned for designs that are fun, unexpected, and completely on brand—because who says sleepwear has to be boring?

Whether you're team chill or team extra, our one piece pajamas will give you a reason to look forward to bedtime.