Splash About Fleece Lined All In One Puddle Suit, After Swim Onesie 6-12 months, snug fit After swimming, simply remove wet swimwear, dry down and dress your little one in our super cosy. fleece-lined, waterproof onesie. The waterproof outer layer will protect from the elements on the outside, whilst the luxuriously soft fleece lining will keep children warm from the inside. A large hood and cuffs on the wrists and ankles provide extra warmth, and the suits are lightweight and comfortable enough to be worn in the car too. A tab covering the zip at the top of the onesie will protect little chins from chafing.