Buying guide for best adult onesies
Did you get the memo? Onesies aren't just for babies anymore — adult onesies make excellent loungewear, as they're intensely comfortable and cozy. You don't have to worry about waistbands digging into you, and they keep heat inside nicely, which is perfect on cold days.
But you'll need to decide whether you're looking for a plain onesie or if you want one that's themed or turns you into some kind of critter (these are also great for costume parties). You might want a drop seat to make things easier when nature calls or a zipper fastening rather than buttons so it's quicker to get on and off. There's also the option to go for adult footie pajamas, which some people love and others can find too warm or restrictive.
Ultimately, we found the Forever Lazy Footed Adult Onesie to be the best pick overall. It's made from super soft fleece to keep you comfy and cozy. We love the convenience of the drop seat and the extra-deep pockets. It has feet, but they're removable, so you get the best of both worlds.
Which onesie is best for adults?
Best adult footie pajamas
Product specifications
Material: Polyester fleece | Size Range: 2X-small to 2X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
Our top pick, this onesie is both practical and easy to wear. We love that it has a double-pull zipper that can be unzipped from the top or the bottom and a concealed drop seat to make going to the bathroom easier. The two side pockets are extra-deep — each one is big enough to fit three 12-ounce beverages, in fact. The feet help keep you cozy but are removable for when you don't need them.
Sizing runs from double extra-small to double extra-large but is unisex, so we'd recommend checking the sizing chart to make sure you get a good fit. It comes in a range of 35 solid colors and prints, including tie-dye, leopard print and plaid.
Best dinosaur adult onesie
Product specifications
Material: Polyester fleece | Size Range: X-small to 2X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Button
Whether you're looking for a Halloween costume or you just love dinosaurs, this onesie is a great pick. We appreciate that it’s made from super soft fleece and the loose-fit design makes it comfortable to lounge around in.
It's suitable for machine washing on a cold cycle and tumble drying on low — or the fabric air-dries quickly. The two side pockets make it easy to carry essentials, whether out and about or in the house.
Best cute adult onesie
Product specifications
Material: Polyester fleece | Size Range: X-small to X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Button
If you're looking for something adorable to wear, this is among the best onesies for adults. It has a narwhal design with a face and horn on the hood plus built-in mittens on the ends of the arms to look like fins. There's a choice of purple, two shades of blue and another blue option with a rainbow horn.
We love that the polyester fleece fabric is soft, warm and conveniently machine-washable. It has pockets, but they're small, so don't expect to be able to carry a lot around with you.
Best plain adult onesie
Product specifications
Material: Cotton-polyester blend | Size Range: Small to 2X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
Made from a blend of 60% polyester and 40% cotton, it has some of the strength and breathability of cotton with the ease of care that comes with polyester. The fabric has a fleecy feel inside but isn't overly thick, which is good news on milder days but not ideal in cold weather.
It's available in 14 color combinations, including black with a white zipper, black with a red zipper, purple and light pink. We're fans of the casual, slightly sporty design.
Best adult onesie with multiple animal designs
Product specifications
Material: Polyester fleece | Size Range: X-small to 2X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Button
If you love animals, you'll have a field day with this choice of 25 creature designs, including kangaroo, walrus, sloth, chipmunk, panda and giraffe styles. Each has great attention to detail, with features such as tails, pouches and flippers, depending on your choice of animal.
It's made from a polyester fleece fabric, which is soft and warm. Add to that the loose fit, and you've got onesie pajamas for adults that are super comfortable to wear. It's a nice choice for either costume parties or relaxation.
Best onesies for the whole family
Product specifications
Material: Polyester fleece | Size Range: X-Small petite to 2X-Large | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
Not only does this onesie come in adult men's and women's sizes, but also in matching versions for kids and pets, so it's the perfect option for the whole family. It comes in gray with a Nordic snowflake design or red plaid.
They're made from super cozy polyester fleece, and we love the attention to detail, such as deep kangaroo pockets and thumb holes in the cuffs. They have a footie design, but you can remove the feet if they get too warm or you want to wear your onesie with shoes.
Best men's onesie
Product specifications
Material: Polyester | Size Range: Small to 3X-tall | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
Sized specifically for men, this onesie comes in a good range of sizes from small to triple extra-tall. There's a choice of 14 designs, of which we particularly like the nice variety of classic plaids. We appreciate that you can remove the feet on these adult footie pajamas because they can sometimes be too warm or impractical.
It has two front pockets, which are reasonably sized, although not huge. The fleece material is not only soft but thicker than average, making this a particularly cozy onesie for cold days.
Best adult onesie with festive designs
Product specifications
Material: Polyester | Size Range: X-small to 3X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
Christmas is a time for getting cozy and lounging around, so if you want your onesie with some festive flair, this is our top choice. You can choose from a whopping 28 designs. Some of them are explicitly Christmasy — such as those with Santa or elf designs — while others are more festive or wintry, featuring snowmen or penguins.
We're huge fans of the pockets, which have their own zippers to help keep your belongings safe. It comes in both men's and women's sizes, making the sizing easier and the fit better than unisex options.
Best unusual creature onesie
Product specifications
Material: Polyester fleece | Size Range: Small to X-large | Machine-Washable: No | Pockets: Yes | Closure: Button
Forget your run-of-the-mill animals; this onesie goes all out with the options, offering everything from flying squirrels to axolotls to tapirs. There's a total of 43 options to choose from, and we love the quality of the design and attention to detail, such as the gills on the manta ray and the curly tail on the chameleon.
Though the look and cozy feel of this onesie is a big plus, it can only be hand-washed, which is inconvenient. However, the fabric dries quickly, even if it's wetter after hand-washing than it would be coming out of a washing machine.
Best buffalo-check onesie
Product specifications
Material: Polyester fleece | Size Range: X-small to 2X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
Not only are these adult onesie pajamas made from soft polyester fleece, they're also lined with sherpa fleece in the hood, making them extra cozy and a perfect cold-weather choice. They're available in eight different buffalo-check color combinations, including red, white and pink.
We love the simple, stylish design with the addition of a sherpa fleece pompom detailing. The zipper makes them easy to get on and off, while the ribbed cuffs keep heat in and allow for a better fit.
Best adult onesie with spooky design
Product specifications
Material: Polyester fleece | Size Range: X-small to 2X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
With its spooky design, this onesie is well-suited to Halloween — or just for anyone who enjoys the creepier side of life. It has a choice of three variations, one featuring aliens, one decked out with ghosts and the other adorned with pumpkins.
It comes in men's sizes and women's sizes from extra-small to double extra-large. The footless zipper design makes it a more practical choice for wearing out of the house if you intend to wear it to a costume party, but it's cozy enough for home use, too.
Best adult onesie with back pocket
Product specifications
Material: Cotton-polyester blend | Size Range: X-small to X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
This onesie is made from a cotton-polyester blend with a similar weight and feel to it as a hoodie or pair of sweatpants. It's warm but more breathable than onesies made just from polyester, so we find it a more comfortable option for people who can feel overly hot in other onesies.
It has two side pockets, as well as a back pocket, which makes it stand out from other designs. You have a choice of 22 designs, including a floral print, a Canadian maple leaf and a stars-and-stripes print.
Best skeleton onesie
Product specifications
Material: Polyester | Size Range: Small to 2X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
Show your spooky side with this skeleton onesie. It's great for Halloween — or Phoebe Bridgers fans — but you can wear it year-round. It has a classic skeleton design and a zipper down the front, making it quicker to get on and off than those with buttons.
It's made from a polyester sweatshirt material, so it feels similar to hoodies or sweatpants, with a soft interior and smooth exterior.
Best lightweight adult onesie
Product specifications
Material: Rayon and spandex | Size Range: X-small to 2X-large | Machine-Washable: Yes | Pockets: No | Closure: Button
If you're looking for a lightweight onesie that won't leave you overheated on milder days, this one should be on your radar. It's made from thin rayon fabric with a small amount of spandex added for stretch.
It has a closer fit than most onesies, so we find it's a good idea to check the size guide to make sure you get the right fit. It comes in a total of 22 color and print options, including black, red, buffalo check and star print.
Best teddy fleece onesie
Product specifications
Material: Polyester teddy fleece | Size Range: Small to X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
With its cozy teddy fleece fabric, we're huge fans of how soft and warm this onesie is. If you're looking for something extra warm or want to be as comfortable as possible, this might be the onesie for you. That said, it can feel overly warm at times.
You can choose between gray and pink, both with white trim inside the hood. The sizes all have a relaxed fit, so you won't feel restricted.
Best thermal onesie
Product specifications
Material: Cotton-polyester blend | Size Range: X-small to 2X-large | Machine-Washable: Yes | Pockets: No | Closure: Button
Thanks to its lightweight design, you can wear this onesie on its own as pajamas or loungewear or under your clothes as thermal underwear. It's made from a blend of 60% cotton and 40% polyester, which is light and breathable.
We love the choice of 14 prints, including some trendy tie-dye prints, a few colors of buffalo check and a couple of festive prints.
Best Grinch onesie
Product specifications
Material: Polyester fleece | Size Range: Small to 3X-large | Machine-Washable: Yes | Pockets: No | Closure: Zipper
Fans of the Grinch will love this onesie as much as we do. Its Grinch design makes it perfect for the holidays, but there's no reason why you can't wear it at other times of the year. The sherpa fleece fabric is exceptionally soft and cozy.
It comes in men's and women's adult sizes, but also in kids, toddler and infant sizes — plus there's a Max the Dog version for your canine companion. So, if you're looking for matching onesies for the whole family, this is an option for you.
Best Nightmare Before Christmas
Product specifications
Material: Polyester fleece | Size Range: X-small to 3X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
The beauty of this “Nightmare Before Christmas” onesie is that it works equally well for Christmas and Halloween. We adore the Jack Skellington and cobweb design on the onesie’s body, as well as the Jack Skellington face on the hood.
It has a couple of convenient front pockets and a zipper to make it quicker to get on and off than onesies with buttons. The fleece fabric is soft and cozy.
Best video game-inspired adult onesie
Product specifications
Material: Polyester fleece | Size Range: Small to X-large | Machine-Washable: Yes | Pockets: No | Closure: Zipper
Gamers will love these Nintendo-themed onesies with three character designs — Donkey Kong, Mario, and Luigi. They're excellent as costumes but are also extremely comfortable pieces of loungewear.
The Donkey Kong version has a very relaxed fit, while the Mario and Luigi options are a little closer fitting. They have some nice details, such as the tie on the Donkey Kong onesie and the buttons on Mario and Luigi's overalls.
Best novelty onesie
Product specifications
Material: Polyester | Size Range: Medium to X-large | Machine-Washable: Yes | Pockets: Yes | Closure: Zipper
Sometimes all you need in life is to dress up like a pepperoni pizza. Give a nod to one of the best comfort foods of all time with this novelty onesie. We find the fit slimmer than some onesies, so it's a good idea to check the sizing chart to make sure it'll fit how you want it to.
The zippered front makes it easy to get on and off, while the side pockets have their own zippers to keep any items you put in them secure. Although it makes a good costume, it's also comfy enough for lounging.
Key considerations
Sizing
Finding the right size in an adult onesie can be tricky. Some come in men’s and women’s sizes, but it’s rare to find men’s big and tall sizes, and it’s fairly challenging to come across petite or plus-size women’s onesies. Other adult onesies are available in unisex sizes for which the manufacturer creates its own size chart based on measurements. There are also adult onesies that are only available in one size or one size fits all.
Popular varieties
Fortunately for loungewear enthusiasts, adult onesies are available in countless varieties. To keep things simple, we’ve grouped them into three categories: classic, themed and creature.
Classic: These onesies can be worn year-round because their patterns and colors are fairly neutral. Solid-color onesies or those featuring tie-dye or stripes are considered classic onesies.
Themed: These onesies are fun and trendy. They often have superheroes, funny patterns or holiday prints. Many of the onesies that feature famous movie or comic book characters are licensed, so they are a bit more expensive.
Creature: Creature onesies can have ears, tail, teeth, spikes or even a unicorn horn. These 3D plush details are often filled to maintain their shape. Some styles have detachable details, like a tail, to make sitting more comfortable.
Features
Footed vs. footless
Adult onesies fall into two categories: those with feet and those without.
Footed (footie) onesies have attached feet that resemble socks. These styles are ideal for wearers who would like to forgo socks and slippers. However, some wearers note that the feet on footed onesies can be unusually large or make their feet sweat.
Footless onesies, as the name suggests, lack attached feet. These are popular with wearers who prefer wearing socks or slippers. One of their pitfalls, however, is that they have ribbed hems at the ankle that may feel too snug to some wearers.
Popular materials
Fleece is a popular material for adult onesies. Soft and cozy, many wearers liken it to wearing a fitted blanket. Fleece is incredibly warm, making it ideal for cold-weather wear. With that said, some wearers may find themselves sweating in a fleece onesie.
Other onesies are made of cotton blends, flannel, microfiber or polyester blends. Cotton and flannel are breathable and lightweight, though they’re known to shrink or fade with repeated washing. Microfiber and polyester blends are considered the most durable options, yet they remain a soft choice. However, they may pill or thin after a few washes, especially in high-friction areas.
Extras
Hood: It’s common for adult onsies to have a hood. According to many wearers, it adds to the overall warmth and coziness of a onesie. Some hoods are oversize to be more accommodating, while others have a drawstring to provide a snug fit. Note that one of the pitfalls of a hood is that it adds considerable bulk to the upper part of the garment.
A few adult onesies have a removable hood with a snap or zipper attachment. This is considered a highly desirable feature in a onesie, especially since many wearers complain that a bulky, lumpy hood makes it difficult to get comfortable when reclining.
Drop-seat panel: Yes, adult onesies are more difficult to remove than other garments. However, many manufacturers have recently embraced a classic detail seen in long underwear of yesteryear: the drop-seat or rear panel. This convenient feature is simply a panel located at the back of the onesie to make trips to the bathroom easier. Styles feature buttons, snaps or zippers for easy access. As expected, a drop-seat panel is considered to be a premium feature, making these adult onesies more expensive than others.
Nonslip feet: Many adult onesies with feet have nonslip details to improve traction on linoleum, hardwood and tile floors. They’re in the form of little silicone or rubber nubs that are often in fun patterns. Unfortunately, the nonslip nubs deteriorate over time, and it’s not unusual for them to eventually wear off completely.
Adult Onesie Prices
Adult onesies range in price from $20 to $100. The quality of the craftsmanship and materials affects price the most, though some adult onesies simply cost more because they’re made by certain loungewear manufacturers.
Inexpensive: Basic adult onesies cost $20 to $40, though the quality here is hit or miss. Many styles in this category are made of cotton blends or flannel, and only some are made with fleece. Some adult onesies in this price range have a hood.
Midrange: These adult onesies cost between $45 and $70. They include a wide variety of well-made onesies made of fleece and other premium material blends. There are many novelty onesies in this bracket as well.
Expensive: The most expensive adult onesies cost $75 to $100 and mostly include styles designed by premium loungewear brands. While they’re generally well-made, they aren’t significantly better quality than some midrange options.
Tips
- Hang up the onesie to dry. While many adult onesies are safe to put in the dryer, even tumbling dry on low can damage some materials. Whenever possible, hang your adult onesie to dry.
- Give a onesie as a comfort gift. Adult onesies are easy to put on and wear, making them ideal comfort gifts for someone undergoing medical treatment or recovering from surgery.
- Buy one for travel. If you’re staying in a hotel that offers a free breakfast, there’s no need to get dressed to grab your waffles. An adult onesie is the perfect piece of loungewear to travel between your hotel room and the lobby breakfast station.
- Check for flatlock seams. If you have sensitive skin, invest in an adult onesie with flatlock seams. They’re much smoother than regular seams, so they’re less likely to chafe the skin.
- Measure the inseam. Sizing isn’t exactly standard in adult onesies. Check the inseam length to make sure you buy one with a relaxed, comfortable fit. If it’s too short, the seat of the onesie may sag and inhibit walking. If it’s too long, the crotch seam may dig into your body when you sit down.
- Keep removable pieces in your pajama drawer. If your adult onesie has a detachable hood or feet, keep them inside your pajama drawer when you’re not wearing them. Otherwise, it’s easy for them to get lost in the laundry or other drawers.
How did we choose the best adult onesies?
Lauren Corona has been writing buying guides and reviewing products for BestReviews since 2017, so her research skills are well-honed. We considered over 100 adult onesies while compiling this list, comparing them based on a number of factors, including comfort, design, material and overall quality.
FAQ
Q. Is a footed or footless adult onesie the better option?
A. You can get the best of both worlds by investing in a footed adult onesie with detachable feet. They’re normally attached with zippers, snaps or hook-and-eye closures. These styles often have elastic at the ankles to ensure the hems don’t drag on the floor when you wear the onesie without the feet.
Q. Do adult onesies have pockets?
A. Most midrange and expensive adult onesies have pockets, usually located at the sides or hips. Most of these pockets are spacious and have plenty of room to hold a phone and other essentials. A few adult onesies also have an oversized kangaroo pocket, such as those seen on hoodies.
Q. Should I size up with adult onesies?
A. It’s not necessary unless you have doubts about whether the adult onesie is true to size. However, it’s often recommended that wearers between sizes opt for the larger size to ensure a comfortable, relaxed fit.
