Kids' Onesies

At SillySanta you'll find over 10 fun styles of kids onesies – also known as kids' all-in-ones or onesie pyjamas – for boys and girls of every age. Get the little ones matching for this year's Christmas card moment! From cuddly Teddy Bear and Reindeer onesies to licensed designs with the Grinch and playful Candy Cane and Unicorn looks, there's a onesie for every kid in our collection.

The everyday character designs behind our kids onesies

The heart of this collection is the characters, and the all-year favorites are the ones kids reach for again and again. There's a Unicorn and a Dinosaur for the imaginative ones, three Teddy Bears in brown, grey and pink for the kids who just want something soft and snuggly, and a cheeky Devil for the ones with a bit of mischief in them. These are the designs that get worn long after any holiday is over, the everyday picks a child pulls on for a lazy Saturday, a sleepover or a cozy night on the couch.

Around those year-round staples sit the seasonal designs, so the collection has a face for whatever time of year it is. The Grinch, the Reindeer, the Candy Cane and the bright Red Hohoho bring full Christmas-morning energy; come spring there's an Easter Chicken; and for Halloween there's a Skeleton onesie that genuinely glows in the dark, which tends to be the one kids show off to their friends. Across the range we stock children's all-year onesies, Christmas onesies, Easter onesies and Halloween onesies, so there's a design to suit most personalities, from the kid who wants a sweet teddy bear to the one who's after the loudest, most playful character on the rack.

Soft fleece you can throw on in seconds

Most of these are made from super-soft fleece, often the teddy-fleece kind, with a little stretch so kids can actually move and play in them. A few of the designs are made from 100% recycled materials, which is a nice bonus if that matters to you, though the exact composition varies from style to style. The practical win for parents is how fast they go on: pull it over pajamas and your child is dressed in about ten seconds, which is no small thing on a cold morning or a sleepy evening.

Choosing the right kids onesies size for your child

These are a regular fit, so the simplest rule is to pick the size your child normally wears. If they're between two sizes, size up – there's no harm in a little growing room, and it keeps things comfy over a sweater. To make it concrete, a child around 129 cm tall fits our size 6–8 Years (122/128), and a child around 136 cm tall fits size 8–10 Years (134/140). If you know your child's height, you can match it to the size chart on each product and get it right the first time.

They're built for real play, too. The fleece is soft but sturdy, and a gentle machine wash keeps them looking good wear after wear. The point is that these aren't fragile dress-up pieces, they're made to be worn, rolled around in and washed plenty. The bit of stretch in the fleece helps here, giving kids room to crawl, climb and tumble without the onesie pulling tight, and the soft handfeel means there are no scratchy seams to bother them halfway through the day or wake them up at night.

Matching the whole family

One of the best things about our kids onesies is that the designs twin with grown-up versions, so your child can match with mom, dad and siblings. A reindeer for the little one and a reindeer for dad makes for a brilliant photo, and the mix-and-match idea works just as happily for a cozy movie night or a themed party as it does for the holidays. If you'd like to dress the whole household, browse the full range of onesies to find the matching grown-up and sibling designs to go with your child's pick.

Whether it's a soft teddy bear for an everyday cuddle or a glow-in-the-dark skeleton for a Halloween party, the idea is the same: an easy, character-packed onesie your kid actually wants to wear, year-round, and that survives everything they throw at it.