These Adult Onesies Will Keep You Cozy All Day Long

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Old sweatpants not cutting it? It’s time to upgrade your loungewear — by a lot.

We’re talking adult onesies. These cozy one-piece pajamas are a fantastic upgrade from sweats. Whether you’re spending the day on the couch or attending a theme party, you’ll feel a lot more fabulous while wearing a novelty onesie with a hood.

These are adult onesies for everyone. If you want to express yourself, you can choose a sparkly unicorn onesie. Alternatively, you might opt for a solid-color or basic plaid pattern if you’re looking for something to wear year-round. There are also costume onesies that you can wear on Halloween or for parties.

Finding the right fit can be tricky when buying onesies online, so be sure to check sizing charts when they’re available. This is especially important if the onesie covers your feet (looking at you, tall guys). Thankfully, most of these options run up to at least XXL, so you can find something if you’re big, tall or both.

To get you started on your mission for ultimate comfort, we’ve rounded up some of the best adult onesies.

1. Forever Lazy Footed Adult Onesie

This unisex adult onesie is soft and roomy, making it ideal for lounging around the house. The onesie has deep side pockets, a hood, and rear zipper. The hood has drawstrings, so you can adjust it to your comfort. The 100% polyester is machine-washable and won’t pill after drying. This product is available in xx-small through xx-large, and Forever Lazy provides an easy-to-read sizing chart.

Pros: This onesie is meant to be roomy, but runs true to size. There are 24 designs to choose from.

Cons: The feet don’t have anti-skid gripping on the bottom. Stock can vary among patterns and sizes.

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2. ABENCA Unicorn Fleece Onesie

Whether you’re attending a costume party or relaxing at home, this onesie will release your inner unicorn. Available in five fun patterns, the unicorn onesie features a horn, ears, face and tail. The fleece material is soft and warm, and the inner fuzzy lining provides extra coziness. This onesie is available in sizes small through extra-large with height recommendations listed.

Pros: The colors and star patterns are vibrant. This onesie has front and rear zippers.

Cons: The sizing may run small. The zippers might not last through frequent wear.

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3. Vavalad Adult Snorlax Onesie

Pokémon fans will love this Snorlax adult onesie. The hood features the character’s eyes, nose and teeth, and the chest has a button-up closer. This onesie is loose-fitting, so you can move comfortably at home or a cosplay event. You can keep your keys, wallet and snacks in the spacious pockets. The product is available in three colors and four sizes.

Pros: This onesie will fit children and adults. The material is soft and lightweight, so you won’t overheat.

Cons: The sizing may run large. The onesie has buttons instead of a zipper, which can be annoying to fasten.

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4. Briefly Stated Bunny Union Suit Pajama Costume

This onesie is based on a costume from A Christmas Story. But even if you’ve never seen the film, you can still enjoy this cozy bunny outfit. It’s available in sizes from small up to 3XL. It has mittens, matching bunny slippers and pointy ears.

Pros: Includes mittens and slippers. Good costume idea.

Cons: Sizing may be difficult for anyone who is thin but tall.

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5. Silver Lilly Unisex Adult One Piece Dinosaur Costume

This dinosaur-themed costume has a hood that’s designed to look like the maw of a T-Rex. It has cuffed ankles and sleeves to trap in heat and keep you warm while you’re storming through Jurassic Park. It’s available in green, brown and pink. Unlike other options that have a zip, this costume has a button-front. Sizes go from X-Small to XX-Large.

Pros: Different colors available. Includes details like a tail.

Cons: Not recommended for washing machines.

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6. Just Love Adult Onesie Pajamas

For something a little spookier, this onesie has a white skeleton motif on a black background. The onesie has a zip front and a hood. The microfleece material will keep you warm and comfortable. Sizes go from X-Small to XX-Large, and the onesie can be safely washed in a washing machine.

Pros: Comfortable microfleece fabric. Timeless skeleton design.

Cons: More expensive than some other options.

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7. Lazy One Pajamas for The Dog, Baby & Kids, Teens, and Adults

If you’re looking to get in the Christmas spirit, these onesies from Lazy One feature Christmasy bear and tree motifs. There are other Christmas-inspired options, or you can get the Hannukah onesie. These onesies are available for adults, children and toddlers, so the whole family can be cozy around the holidays.

Pros: Available in different patterns and sizes for the whole family.

Cons: Sizing limited for anyone taller than 6′ 2″.

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8. SKYLINEWEARS Mens Jumpsuit Onesie

Maybe you want a onesie, but you don’t necessarily want it to be a costume. This option features a simple color block design, and it comes in a range of different colors. It also has cozy kangaroo pockets, two hip pockets, a zip front and a hood. Unlike most of the polyester options on this list, this onesie is made from a cotton/poly blend.

Pros: Available in a variety of colors. Simple, non-costume design makes it great for lounging. Four pockets on the front.

Cons: Sizing can be difficult if you’re especially tall.

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9. Sleepyheads Fleece Buffalo Plaid and Solid Red Onesies

These onesies come in seasonal colors and patterns, making them great options for the holidays. They’re available in either buffalo plaid or solid red, and they come in sizes for infants, kids and adults. The kid’s versions are footed, while the adult versions are not. You can mix and match or get them all in the same pattern, but they will all coordinate for a perfect family holiday look.

Pros: Available for kids and adults. Buffalo plaid and solid red make these great holiday options.

Cons: If adults want options with feet, they’ll have to pick something else.

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10. WOTOGOLD Shark Adult Pajamas

For something aquatic inspired, this onesie includes the jaws of a shark and even fins on the top of the hood and back of the costume. It’s also available in a few different colors like blue and dark gray. It’s a great warm-weather option, too, since it’s available with short sleeves and legs.

Pros: Available in different colors. Comes with short sleeves.

Cons: Fin on the back may make it uncomfortable for sitting.

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11. Alexander Del Rossa Men’s Onesie

If novelty onesies aren’t your thing, this product might do the trick. This fleece onesie is available in patterns like plaid, camouflage and several solids. It has spacious pockets, a drawstring hood, and a basic front zip. The non-skid feet zip off, so the onesie can be footless as well. There are six sizes available, so be sure to compare the sizing chart to your measurements.

Pros: The onesie is machine-washable, and the colors won’t run. The sizing chart is detailed.

Cons: The zipper around the ankles might irritate your skin. The larger sizes might still be too small for tall men.

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