From paddling pools in the back garden to big splashy days at the British seaside, our kids’ swimwear is made for movement, mess, and a whole lot of magic. Soft on little skin, easy on busy parents, and bursting with playful prints, these are the pieces that turn “Have you packed the towels?” into “Race you to the waves!” Available in sizes 2–10, every swimsuit, bikini, trunks and swimming costume is designed to keep the hero of your day—your little swimmer—happy, comfy, and ready for one more dip.
Kids’ Swimwear for Summer Adventures
Summer with kids is part treasure hunt, part obstacle course, and always worth it. Our range keeps up with the wiggling, wriggling, cannonballs and cartwheels. For the mermaids-in-training, you’ll find swimsuits and swimming costumes that stay put through every splash, with soft stretch, comfy lining and designs they’ll proudly show off at the beach, pool or holiday club. Prefer two pieces? Our bikini sets mix playful prints with practical fits, so little ones can change quickly after lessons or add a rash top when the sun peeks through the clouds. For the mini wave-chasers, trunks and swim shorts come with secure waistbands, easy-draw cords and lightweight fabric that won’t weigh them down from the first splash to the last lap.
We’ve sprinkled in all the joy—think dinosaurs racing surfboards, bold rainbows, and cheeky sea creatures—so choosing a favourite becomes half the fun. And because summers like to surprise us, there are long-sleeve swim tops and rash vests ready for breezy beach days, plus snug cuts that fit neatly under a towel or robe when it’s time for chips on the pier. Every style is made to move, to play, and to make those little leaps feel big. If you’re shopping for siblings, our matching themes across sizes 2–10 make twinning at the tide line delightfully easy.
Quick-Dry & Easy-Care Swimwear for Busy Families
Parenting is a full-contact sport, and soggy kit is no one’s idea of a win. That’s why our swimwear is made with quick-dry, lightweight fabric that shakes off water fast—perfect for wrangling towels, locating lost goggles, and getting everyone back in the car before the post-swim snooze sets in. After your day out, a simple rinse helps keep colours bright and fabrics happy; then it’s into the wash and out again without fuss. Less faff, more fun.
Comfort is baked in from the first stitch. Smooth seams help reduce the rubs, gentle stretch moves with every kick, and soft waistbands keep trunks and shorts comfy from splash park to sofa. We know little ones can be particular, so we add adjustable details where they matter, like drawcords on trunks and flexible straps on selected swimsuits, to help you find that just-right fit. For sun-smart dressing, pair a rash vest with trunks or a bikini bottom for a bit more coverage on beach days or during swim lessons at school. It’s practical, it’s comfy, and it lets them focus on the important stuff—like earning that next swim badge.
Spills, splashes, sand castles collapsing in a giggle—bring it on. These pieces are made for real family life in the UK: easy to pack for a last-minute holiday, tough enough for the local leisure centre, and ready to dry on the radiator while you pop the kettle on. If you’re not sure which style they’ll love most, an E‑Gift Card is a cheering, fast-as-a-flash option that lands in your inbox and lets them pick their perfect pool partner.
Mix & Match Kids’ Swim Sets for Endless Fun
Think of our collection like a box of seaside sweets—pick, mix, and make it theirs. Start with a favourite print in their size (2–10), then build out with coordinating pieces. A rainbow rash top with starry bikini bottoms? Brilliant. Dinosaur trunks with a bold stripe swim tee for lessons? Roarsome. Keep a couple of tops and bottoms in rotation to suit the weather and the plan: long sleeves for breezy cliff walks and rock-pool exploring, classic short sleeves for splash pads and indoor pools. The beauty of mix and match is simple: more ways to wear, fewer “where’s my swimmers?” moments, and a kit that grows with their confidence.
Little style heroes love to choose, and that choice builds independence. We keep colours and prints talking to each other across the range, so siblings can coordinate without being carbon copies, and your holiday photos look as sunny as they felt. Practical touches—like easy-on necklines, soft linings and secure fits—mean less wiggling on the changing-room bench and more time making memories. And if you’re buying for birthdays, half-term surprises or the start of swim club, our E‑Gift Cards let you give the joy of choice in seconds—no sizing guesswork, just instant “Can we go swimming now?” excitement.
When the day’s adventures wind down, sling the swimwear to dry, shake the sand from the towels, and smile at the trail of tiny footprints. With Cotton On Kids, UK families get swimwear that’s as playful as they are, as comfy as a cuddle, and as ready as you are to do it all again tomorrow. Swimsuit, bikini, trunks or classic swimming costume—whatever they call it, they’ll call it their favourite.
