Heated gilets are another option for warming just yourself rather than spending money heating the whole house during the day. Our favourite features? Not only is this women’s onesie ridiculously soft, it has cute ears on the hood and full length legs that are just begging to be worn with booty slippers to complete the outfit. Sure, you’ll look like you’re off to a teddy bear’s picnic in this super-soft onesie, but you’ll also be cosier than you’ve ever been.

Finally, we cross-referenced all of the above information to find the best onesies for women that had won the most accolades and recommendations across the board to bring you a selection of the best ones at various price points. We think there’s something here for everyone. Why you should trust us Touching on the price of this, it is the most expensive in our edit, but for a luxury treat that you’ll treasure all winter long, we think it can be justified. Absolutely, there are endless options for onesies for adults, as shown in our edit of the best onesies for women. You can even buy matching onesies for the whole family, be it for Christmas, birthdays or family trips. How onesies can help cut heating bills Stand out from the crowd in this bold animal-print onesie, complete with cosy hood, cuffed legs and wrists and contrasting drawstrings, for an extra stylish touch. The Hush onesie is expensive though, so for a more affordable option, Dunelm’s Teddy Bear Feather Soft Marl Onesie is an ultra-snuggly option. Do you wear anything under a onesie?As Money Saving Expert Martin Lewis keeps saying, it’s easier to heat the person than to heat the home, and wrapping up in a onesie when you’re the only one home is more cost-effective than blasting out the heating. Still, these are not the most breathable base layers we tested, which is one reason why we recommend them for lower-output activities, like light hikes, dog walks, and trips to brunch. That said, even with the higher cost, our tester still highly recommends them for lounging on winter days and for light activities. Our favourite features? Fans praise how soft and cosy it is, with many impressed by the bright colour, too.

When I wore them on a hike, I felt dry the whole time, even after 1.5 hours of hiking uphill,” our tester said. “This fabric feels like it has a very tight, high-quality weave. I would trust these in very cold conditions, including those where I sweat a lot—like cross-country skiing—to keep me dry.” Get in the festive mood with this fabulous one piece; soft, comfortable, & warm, it's the perfect loungewear for lazy days over the holiday season.Described as 'the ultimate lounge piece' by John Lewis, this cute fleece onesie features adorable pom poms and a fur-lined hood, making it stylish as well as cosy. Our Swears By edits are compiled by journalists with expertise in the areas they’re writing about. To help ensure we give the best, most accurate and trustworthy recommendations, they follow several steps when choosing products. Recommendations from real parents If you love M&S’s iconic pink pig as much as we do, this novelty onesie is the one to go for. Sure, you can’t wear it if you have video meetings, but it’s cute and fun, and you’ll smile every time you catch yourself in the mirror.

It has a slouchy fit, so you can wear pyjamas or thermals underneath when the temperature really drops. The zip reaches to just below the belly button, so this is easy to step in and out of, plus it has ankle cuffs to ensure you feel extra cosy. It has a snuggly hood too. Plus, if you're looking for other cost-effective ways to keep the thermostat low or just to stay cosy this winter, our guides to the best blanket hoodies for kids, best draught excluders, best weighted blankets for kids, and best winter coats for women have got you covered.

Available in a huge variety of styles, from cat to corgi to reindeer to elephant, this onesie also features useful cuffed legs and arms and comes in a soft, plush material. We did have two issues. First, the material was itchy until multiple washes when it began to get more comfortable. Second, our tester says to size up as the top was already a bit smaller than expected and shrunk more in the wash. But one thing we like about this set of thermals is they come in a wide range of sizes, including plus sizes, so it should be easy to size up a bit.

As Martin Lewis said, it’s easier to heat the person than the home, so if you’re home alone during the day, rather than spending money heating the whole house, it’s worth layering up in a onesie to conserve warmth. Testers wore the thermal underwear while engaging in a slew of activities from skiing to snowboarding, hiking, running, walking, errand-running, and attending outdoor festivals. Our testers are based across the country, from New York to the Midwest and California, and also took the thermal underwear on trips with them. That’s up to you! If it’s a thinner onesie, most people tend to just wear underwear underneath, but if you’re planning to wear clothes under your onesie to keep warm at home, remember to size up. The hood is good for chilly evenings too, and it’s easy to slip on and off, with a zip that reaches to the hips. Before we recommend new products, we always ask our trusted Mumsnet users, of which there are more than seven million each month. That’s a lot of honest, impartial advice. Expert guidanceWe were also impressed by the fit of the Woolies 2. “I loved the fit of the thermal underwear all around the body. From the top to the leggings, the material hugged my body rather than restricting it,” our tester said. Many onesie fans note that they wear their pyjamas under their onesie when they’re lounging in the evening, so again, size up if this is your desire. Can adults wear onesies? Our favourite features? This is the perfect onesie for Harry Potter lovers, complete with inner lining in Gryffindor’s iconic colour scheme. Fans say it’s fantastic to wear on top of pyjamas for an extra cosy layer, plus they praise it for staying just as fluffy when washed. One reviewer even noted it’s so cosy they don’t need to put the heating on - the ultimate praise when energy bills are soaring. Our favourite features? Perfect for keeping warm at your desk, lounging in of an evening, or even using as nightwear, this is a versatile onesie that will see you right through winter.