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Though some people think that adulthood marks the end of fun, nothing could be further from the truth, and adult onesies are solid proof of that. If you're an adult wanting to unleash your inner child, or just wanting to kick back, relax, and enjoy a chill movie night with a glass of wine, a onesie is the perfect outfit to do it in.
However, since being an adult means you also have a ton of responsibilities to take care of, mybest did the hard part for you. We looked far and wide for the best adult onesies out there. Topping our list is Lazy One's fun adult onesie, which comes with a silly flapjack bottom. It comes in sizes for infants and kids too. Check out the rest of the super fun onesies we found, and give our buyer's guide a read while you're at it so you know what to look for!
mybest US' editing team consists of experienced members who have backgrounds in writing, editing, translation, and more. We are dedicated to researching what makes a product or service the best to users in the US in order to create top-quality articles. From skincare, to kitchen appliances, and to DIY supplies, our mission is to find the best ones for you.
Table of Contents
When picking an adult onesie, go for one that's comfortable and fun. Make sure it's easy to wear and that it comes with cool extra features!
Many adult onesies follow a specific theme, making them more like costumes. From wild animals to cute ones, these themed onesies are bound to make any adult feel like a kid again. A shark onesie is perfect for a “daddy shark” vibe, while a penguin costume would be great either for a party or a lazy day at home from work on a cold day.
Other animal-themed onesies are crocodiles, lions, and pandas. Dinosaur onesies might even come with tails. Some are even inspired by fictional animals like the unicorn.
Others are inspired by fictional characters. Stitch, Santa, and Olaf are some examples of well-known characters. There are also onesies that are themed after inanimate objects, like Christmas trees or even avocados!
Since onesies are quite comfortable and cozy, they also make great pajamas and loungewear. Onesie pajamas with a hood can keep your head and ears warm as you sleep.
Thermal onesies keep you extra warm in cold weather, thanks to the super-insulating material. Some are even designed to be wearable blankets.
It's important to choose a material that you’re comfortable in, so you don’t end up putting on something that makes you itch. Polyester is soft and easy to wash. Though it might be good for keeping comfortable and cool, it might not be the best material if you're looking for something to keep you warm.
Fleece is soft to the touch, thick, and highly insulating. This might make it too stuffy to wear in warm weather. However, it's great for keeping warm on a cold day. Cotton, on the other hand, is easy on the skin, but it isn't as warm as fleece or wool.
Some onesies are made of a blend of materials that give it specific features. For example, spandex and polyester blends are stretchable. This works well for onesies that are meant to be worn as an inner layer. Other onesies have a combination of different layers, such as a cotton outer layer, but a fleece-lined inner layer.
Pick a onesie with a closure type that’s easy to use. Zipper onesies are quick to put on and take off since a slide up or down will do. Button-up onesies require more work, but your skin isn’t at risk of getting caught in a zipper with these.
A onesie with an adjustable waist might have a garter or elastics you can tug to tighten the fit around you. Cuffed ankles and wrists also ensure that the fabric will fit snugly, preventing cold air from entering through any spaces that might be there otherwise.
Some onesies have extra features that make them more comfortable. Pockets allow you to either keep your hands warm or stuff a few important things inside.
Onesies that include your feet will keep your ankles and toes covered and warm. Some onesies with booties even come with special anti-slip soles, which will help prevent any slips on smooth floors.
Hooded onesies on non-themed sets allow you to make adjustments according to the climate you're in. Plain hoods that come with drawstrings allow you to keep your head warm and tucked in on extra cold days.
Some onesies even have a hood that can function as a pillow! Character-inspired hoods, on the other hand, add detail to your outfit such as an animal face or head, or spikes for a dinosaur-inspired onesie.
Some onesies have slots for your fingers, while others come with removable mittens which keep your hands covered and snug in cold weather. Others come with extra details like make-believe wings or a tail!
Products | Image | Click to purchase | Price | Key features | |
---|---|---|---|---|---|
1 | Lazy One Flapjack Pajamas | $44.99 Mid | Adorable Onesies for the Whole Family | ||
2 | Forever Lazy Heavyweight Adult Onesie | $49.99 High Mid | Laze Around All Day in a Full-Body Hoodie | ||
3 | Ekouaer Zip-Up Jumpsuit | $30.99 Low Mid | Lounge in Style With a Sporty, Figure-Flattering Jumpsuit | ||
4 | PajamaGram Hoodie-Footie One Piece Pajamas | $79.99 High | Warm and Soft Onesie for People Who are Always Cold | ||
5 | Carhartt Thermal Union Suit | $44.99 Mid | An Insulating Onesie Designed for Functionality | ||
6 | Footed Pajamas Family Matching Hoodie Onesies | $44.95 Mid | Keep Your Feet Warm With Footed Pajamas | ||
7 | Alexander Del Rossa Men’s Fleece Onesie | $39.99 Mid | Soft Plaid Onesie With Removable Booties | ||
8 | Newcosplay Flying Squirrel Pajamas | $25.99 Low Mid | Glide Around in This Flying Squirrel Onesie | ||
9 | Silver Lilly Dinosaur Costume | $24.99 Low | Roar Your Stress Away in a Dinosaur Onesie | ||
10 | Duofold Men's Double-Layer Thermal Union Suit | $36.41 Mid | A Soft Layer on the Inside and Warm Outer |
This button-up onesie has a functional button-up bottom flap on the adult sizes. Its cotton material is soft and fuzzy and pre-shrunk. It comes in an array of sizes for the whole family and other styles and colors as well, many with puns about the bottom flap!
Some reviewers complained about the inconsistent sizing, which results in onesies that are either too big or too small. Others found the material too thin. However, many said that this onesie is a go-to set for the holidays because of its comfy, cozy, and soft material.
This comfortable onesie is made of a heavy blend of cotton and polyester. It's equipped with a zipper closure, side pockets, and a drawstring hood. It also has a handy rear-zipper drop seat and double-pull front zipper that makes it easy to go to the bathroom.
Some reviewers complained about how the material tends to pill after a few washes. However, many said that this is the perfect outfit to laze around in because of its comfortable fit, warmth, and deep pockets. Some even warned that the material automatically puts you in a laid-back mood!
This jumpsuit works as an inner or outer layer and comes in a range of colors including tie-dye. It's got zipper closure as well as pockets and an adjustable drawstring hood.
Many reviewers liked how comfortable the thick, T-shirt-like material is. Others also liked how the fit and shape of the jumpsuit makes it flattering on their figure.
Made of polyester microfleece, this Nordic pattern onesie is ultra-soft. Equipped with full zipper closure, a drawstring hood, kangaroo pockets, and wrist cuffs with thumb holes, it's also really adjustable and functional. It has removable booties made of the same material so your feet aren't left out.
A few reviewers said that the material can get damaged easily. However, many reviewers loved the fluffy and soft material. People raved about how warm this onesie is. The removable booties were also a favorite.
This men's onesie is made in a waffle knit to trap heat. Its tagless label, ease of movement, and strategically-placed seams that prevent the fabric from rubbing against your skin all make for maximum comfort. The fly and the back opening are equipped with button closures.
Some reviewers say the buttons break easily or tend to come undone. Others said that the back opening exposes their rear. However, reviewers liked the suit does a good job at insulating in cold weather. The suit makes a great base layer for the winter months.
This onesie keeps you warm from head-to-toe with its side pockets, hood, and built-in booties. The polyester-brushed polar fleece material gives it a soft and fuzzy feel. It comes in sizes for infants, kids, and pets too, so you can get the whole family to join in on the onesie fun.
Some reviewers complained that the material and zipper tend to wear out. However, many found it comfortable, thanks to the soft material being on the inside too. People said that this onesie is perfect for the cold weather and some even turn them into costumes!
This onesie is made of microfiber fleece, which is soft to the touch and packs insulating power. It has a hood, pockets, and removable booties with non-skid material. The hoodie has a drawstring and the onesie is thin enough to be worn underneath another layer of clothes.
Some reviewers complained that it develops holes quite easily. However, many loved the soft and comfortable material. Others also loved the removable booties. Users said that the fit gives you enough room to breathe and putting on this onesie is like wearing a blanket!
Fun meets function in this flying squirrel onesie in three colors. It can be worn as a costume or as loungewear. Its hood comes with ears and flying squirrel face details, and its sleeves are connected to the torso with extra fabric. It also has pockets and a cute little tail.
Some reviewers said that the actual color is closer to eggshell white and light brown than it is to pink and white. Others said that the buttons are too spread out. However, many said that it's soft and comfortable. They liked the detail of the low crotch, saying that it closely resembles an actual flying squirrel.
Complete with a spiked tail and hood with dino teeth and eyes, this costume is bound to cheer you up. It's also super comfy with its loose fit and polyester fabric. Equipped with button closure and hidden pockets, this onesie is also functional.
Some reviewers didn't like the saggy crotch area. Others found the hood too big. However, many loved the dinosaur details and how comfortable and warm it kept them.
Thanks to its double layers, this onesie is highly insulating. While the inner layer is made of cotton, the outer layer is made of a mixture of cotton, merino wool, and nylon. It's also equipped with a convenient rear opening.
Some reviewers complained that the onesie shrinks after being washed. Others said the buttons are in inconvenient places or that they're hard to use. However, reviewers liked that the fit of this onesie can work for both men and women. Others loved how comfortable and warm it is.
Unleash your inner child with these fun products! They're bound to give any adult loads of fun at the end of the most stressful day.
No. 1: Lazy One|Flapjack Pajamas
No. 2: Forever Lazy|Heavyweight Adult Onesie
No. 3: Ekouaer|Zip-Up Jumpsuit
No. 4: PajamaGram|Hoodie-Footie One Piece Pajamas
No. 5: Carhartt|Thermal Union Suit
View Full RankingThe descriptions of each product are referenced from content available on manufacturer, brand, and e-commerce sites.
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