14 Best Onesies for Adults to Wear to Stay Warm in 2025
Keep the winter chill (and huge heating bills) at bay with the best, snuggliest onesies on the market.
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Onesies used to be something only mums with newborns got excited about. But that’s all changed with the growing popularity of onesies for adults. And while it sounds like we’re talking baby clothes, that hasn’t stopped thousand of Australians from taking to onesies like ducks to water.
And what’s not to love? They’re comfy, easy to wear – and so warm, they can save you hundreds on heating bills. One outfit that does it all.
There is always so much excitement around the Oodie Onesie, which I was lucky enough to put it to the test. I have to say, I’m in love. Soft, cosy and super warm, it was perfect for lounging around at home and it made me feel like I had my own personal heater.
That’s not to say onesies are only to be worn while relaxing at the home, curled up on the couch. Thanks to celebs like Kim Kardashian, who prove just how versatile and stylish a onesie can be, the onesie has officially crossed over into everyday fashion. Our fave is the Skims Square Neck Low Back Catsuit.
We’ve gone through all the onesies available in Australia and rounded up all the best options available this season to suit a range of looks and budgets, so get ready to enter your onesie-wearing era.
OUR TOP PICKS
BEST OVERALL ONESIES
The Oodie Onesie, $99 at The Oodie
Why we love it: Warm and cosy with a fitted shape
What to consider: Not sherpa lined like the original Oodie
Materials: Plush polyester | Size: S/M to M/L | Care: Machine washable
Tried and tested by Susannah Hardy, Parenting Shopping Writer
This latest creation from The Oodieis set to become your new best friend. Much like the original Oodie, except the Onesie covers up your legs as well.
I had the opportunity to trial The Oodie’s new Onesie and I love it. Made from soft and plush fabric, it’s like velvet against your skin. And unlike the sherpa-lined Oodie, this ensemble is lightweight as well as easy to wear and move around in. The first time I put it on, I melted into the softness and felt instantly warm and cosy. I also found it a snap to pull on and zip up. There are elasticated cuffs to trap the warmth and at the wrist, the cuff feature a hole for the thumb, creating a fingerless glove situation. Ideal if, like me, you get cold hands while tapping on the keyboard. I also love the adjustable waist for a more custom in fit. Plus, there’s no need to worry about taking off the onesie whe going to the bathroom as there’s a convenient “butt flap” feature.The perfect lounging or work-from-home ensemble.
Just Love Holiday Onesie, from $84.33 at Amazon Australia
Why we love it: Fun patterns and cute pompom detail
What to consider: Prices vary between colours and sizes
Materials: Plush fleece | Size: XS to XXL | Care: Machine washable
What You Need To Know
This ultra soft and cosy onesie is made of plush fabric and features a sherpa fleece-lined hood with cute pompoms on the draw cord. There are side pockets and elasticated cuffs for trapping the warmth – and a host of fun designs to choose from including hearts and different coloured checks.
Amazon shoppers rave about it, with one leaving a review that said, “I loved these pjs, they’re super comfortable great quality and super warm!” Another wrote, “Really cute. Sizing is true. Super soft and cosy. Love this!”
BEST BUDGET ONESIES
Unicorn Tie Dye Onesie, $29.99 (down from $49.99) at City Beach
Why we love it: The bright pattern and unicorn detail on hood
What to consider: Fastens up with buttons
Material: Polyester | Size: S to XL | Care: Hand wash and dry flat
What You Need To Know
This fleecy onesie from City Beach comes in at a great budget-friendly price, not to mention an eye-catching design with its bright, happy tie dye print. It features long arms and legs, a hood and side pocket. Best of all, it has super fun unicorn ears and a horn on its hood, plus a cute unicorn tail on its behind.
BEST FOOTED ONESIES
Forever Lazy Footed Adult Onesie, from $77.26, at Amazon Australia
Why we love it: It keeps all of you warm, including your feet
What to consider: Customers report that sizing is large, so you might need to size down.
Materials: Polyester fleece | Size: XXS to XXL | Colour: Over 30 patterns and colours | Care: Machine Washable
What You Need To Know
Made from super cosy anti-pill fleece, this onesie will keep you snug and warm in winter. Especially with the added bonus of enclosed feet so you can be completely covered – but as they’re detachable, you can also take them off if you want to be feet-free. Other key features include side pockets, a hood and rear opening so you don’t have to completely undress on a cold winter’s night to go to the bathroom. There are heaps of patterns and colours to choose from, even options to suit seasonal holidays like Christmas!
There are literally thousands of reviews for this onesie. One customer wrote, “This onesie is exactly what I was looking for. I wanted something with feet and it's a huge bonus that you can take the feet off if you don’t want to wear them or if you need to wash them separately.”
Another commented, “The product is absolutely what I want! So convenient for wearing at home!”
BEST STYLISH ONESIES
Square Neck Low Back Catsuit, $124 (down from $178) at SKIMS
Why we love it: Buttery soft cult fabric
What to consider: Limited colours
Materials: Polyamide, Elastane | Size: XXS-4X | Colours: Smoke and Black | Care: Cold Wash
What You Need To Know
You’ve probably seen Kim Kardashian rock this look, and now you can too. The SKIMS Square Neck Low Back Catsuit is crafted from their cult-favourite buttery-soft fabric that hugs the body like a second skin. Featuring a flattering square neckline and a low back, you can pair it with heels for a glam, effortless look or throw on a pair of sweatpants and keep it casual chic. Either way, it’s guaranteed to turn heads.
One reviewer raved, ”I’m 5’4” with an average build (56kg and a DD bust) and purchased a size S - it fits like it was custom made for me. I didn’t need a bra, I didn’t get a camel toe, and there were no rolls when I sat down. It didn’t need constant adjusting either. I wore it out with heels for a night on the town, but I’d be just as happy wearing it to brunch or lounging at home. This is hands down the most versatile, flattering, all-rounder piece I own.”
Infinity Dri-FIT Flare Bodysuit, $65 (down from $130) at The Iconic
Why we love it: Activewear you can wear all the time
What to consider: Getting in and out of it
Materials: Spandex, nylon and polyester | Size: XS - XL | Colours: Black | Care: Cold Wash
What You Need To Know
The Infinity Dri FIT Flare Bodysuit from Nikemakes fab activewear and is great as loungewear too. You can pop it on the days when the gym is on the agenda, but also style it up if you have other places to be. Or, you could simply wear as a base and layer with a jacket, jumper, skirt or wrap. Available in black, this is a must-have wardrobe item this winter.
BEST NOVELTY ONESIE
Sloth Onesie, $59.99 at City Beach
Why we love it: Fun sloth hood
What to consider: The white in the middle could get dirty more easily
Materials: Polyester | Size: S - XL | Colour: Light Brown | Care: Cold Wash
What You Need To Know
Slow down and snuggle up in the ultimate fun and “chill-out” onesie. This soft sloth onesie wraps features a cosy hood complete with an adorable sloth face and tiny ears. The hands are fully covered too, with playful sloth claws sticking out for the full lazy sloth look. With its relaxed fit, tail detail, and cuffed ankles to lock in warmth, it’s perfect for movie marathons, lazy Sundays, or whenever you just feel like embracing your inner sloth.
BEST SPORTY ONESIES
lululemon Align™ Bodysuit 25”, $169 at Lululemon
Why we love it: Tight fit that contours to the body
What to consider: Light support
Material: Nylon and lycra elastane| Size: 0-24 AU | Care: Gentle cold machine wash
What You Need To Know
Designed for yoga and low-impact activities, the lululemon Align™ Bodysuit 25” offers a weightless, second-skin feel thanks to its buttery-soft fabric. It features a built-in shelf bra with pockets for optional cups, light support for A–D cups, and a flattering tight fit that contours to the body body. The fabric is also sweat-wicking, breathable, and super stretchy, it’s perfect for stretching, flowing, and lounging.
LSKD Untamed Bodysuit, $100 at LSKD
Why we love it: Tight fit that contours to the body
What to consider: Designed for low impact training
Material: Zepher | Size: 2XS - 3XL | Care: Gentle cold machine wash
What You Need To Know
If you love rocking a matching set to the gym or Pilates, the Untamed Bodysuit in Pink Frosting is your ultimate low-impact workout companion. Designed for Pilates, training sessions, or even stylish rest days, it’s crafted from ultra-soft Zephyr fabric that hugs and flatters your figure with contouring seamlines and a high neckline for added support and coverage. The statement open back adds a bold touch - perfect for showing off those back gains.
Men’s Tracksuit Jumpsuit, $66.49 (was $132.94) at Light In The Box
Why we love it: Cool-looking comfort
What to consider: May be too warm for cardio exercise
Material: Stretch cotton | Size: S to 3XL | Care: Machine washable
What You Need To Know
This ultra comfy all-in-one tracksuit is perfect for sporty types. Made of cosy, breathable stretch cotton, this convenient outfit features long arms and sleeves, an easy front zipper, snugly hood and four large pockets – and there are five chic tones to choose from. Customers have bought these to wear as pjs as well as activewear and the feedback has been extremely positive (from women as well as men).
One shopper said, “Fast delivery, quality for the price, totally okay and comfortable on the skin.” Another said, “Bought these for pjs, they are comfortable and super warm, 4 big pockets.”
BEST SUMMER ONESIE
Oodie Romper, $39 (down from$79), at Oodie
Why we love it: The silky and buttery fabric
What to consider: Don’t need to wear its sash tie to bed
Materials: 97 per cent bamboo cotton | Size: S-M, M-L | Care: Machine washable
Tried and tested by Susannah Hardy, Parenting Shopping Writer
Another new creation from the team at The Oodie, Romperis more like a relaxed and fun summer ensemble than sleepwear – yet its silky feel is perfect for a blissful night of slumber. It features short legs and arms with a front zipper, hood, side pockets and sash tie waist. I was worried it might be to hot for sleeping, but the bamboo cotton is lightweight, cool and breathable. It also has a buttery feel that’s heavenly against your skin. For someone like me, who spends a lot of time in pjs and loungewear, it’s a welcome addition to my wardrobe. Except my 12 year-old has now fallen in love with it, so I probably won’t see it again. Although that’s a great review in itself.
While this pattern is not avaliable any more theres so many fun ones to choose, from Pink Bows to Multi Floral.
Womens Marakech Romper, $89.99 at The Iconic
Why we love it: Fun summery pattern
What to consider: Fixed closure, no zips or buttons
Materials: Viscose | Size: S-XXL| Care: Machine washable
What You Need To Know
Perfect for sun-soaked days and beachside adventures, the Roxy Marakech Romper blends laid-back style with everyday comfort. Made from lightweight 100 per cent viscose, it features a straight neckline, adjustable straps, and practical front patch pockets. Whether you’re heading to the coast or strolling through the city, this easygoing piece.
BEST KIDS ONESIES
Shark Blanket Hoodie Onesie, $25 at Amazon
Why we love it: Budget-friendly price
What to consider: Said to have inaccurate sizing chart - so size up!
Materials: Fleece | Size: 149cm to 194 cm in height | Care: Machine Wash
What You Need To Know
Dive into cosy comfort with this Shark Blanket Hoodie Onesie, designed to keep you warm and snug while doubling as a fun shark costume. It’s made from ultra-soft fleece fabric and features playful shark details - from fin-shaped arms to little teeth accents. Available in a range of sizes for both kids and adults, it’s perfect for movie nights, camping trips, costume parties, or simply lounging around at home.
Kids Onesie Halloween Plush Pajamas, $31.99 at Amazon
Why we love it: Comes in 6 different costume designs to choose from.
What to consider: Only goes to age 9 sizing
Materials: NA | Size: 2-3T - 9yrs | Care: Machine Wash
What You Need To Know
This adorable costume is designed for comfort whether it’s Halloween night, a themed party, or just imaginative play at home. Featuring cute animal face details, cosy hood, and a durable design, it’s perfect for keeping kids comfy while sparking creativity. PLus it comes in 7 different designs from stitch, unicorn to a tiger designs.
Easy to move in and machine washable, it’s a fun, practical addition to any child’s wardrobe.
WHAT TO CONSIDER WHEN BUYING A ONESIE
We took the following factors into consideration when selecting the onesies for this list:
Fabric: There is some variation in onesie fabric. Most winter onesies are made of plush or fleecy polyester which is warm and cosy, while others made of cotton are more breathable, which is ideal for sleeping.
Fit: Does your onesie feel comfortable to wear? You need a relaxed, comfortable fit for lounging about and one that also allows for easy movement.
Design: Onesies come in all sorts of designs, patterns and colours to choose from. Plus, there are plenty of cute and cosy animal and novelty options.
Features: Consider different features such as pockets, hood, enclosed feet and elasticated cuffs.
Care: Onesies definitely need to be washed, especially if you wear them all the time. Make sure to read the care instructions as they can differ for each onesie. Some are machine washable, some need only a cold water or delicate cycle, while others musts be hand washed only.
Price: Onesies vary from under $20 to over $200. You don’t need to spend a fortune on a onesie, but it comes down to what you need it for. If you’re wearing it all the time, perhaps working from home, you may want a more luxe option. However, if it’s for a one-off party or event, then you can find fun budget-friendly options that won’t break the bank.
HOW WE CHOOSE OUR PRODUCTS
Our team of experienced writers spend hours researching products to include in articles. We find out what factors make a good product by talking to experts, reviewing test results and analysing thousands of customer reviews.
FREQUENTLY ASKED QUESTIONS
CAN I WEAR MY ONESIE IN PUBLIC?
According to my teenage daughter, you definitely can. And to back this up, we saw a 20-something old woman wearing a cosy onesie walking to the train station just the other day. Of course, my daughter said, “See, you can totally wear a onesie out.” Great news for me and onesie weavers the nation over.
CAN I WEAR MY ONESIE TO BED?
More Coverage
Yes, this is ultimately what they are designed for, however if you’re a hot sleeper (like me), just make sure you don’t overheat in the middle of the night. Many are made from polyester, which is soft and warm but not always breathable, so nights in these onesies might get a bit sweaty. Onesies made from breathable fabrics such as cotton and bamboo might be better for bedtime wear.
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