The Warm In One is Splash About s coziest baby wetsuit ideal for little ones who feel the cold during swim time. Luxuriously fleece-lined, it keeps babies warm and comfortable both in and out of the water.Designed to work like a traditional wetsuit, the Warm In One traps a thin layer of water against the skin, which is gently warmed by body heat to help keep your baby calm and cozy. Full-length sleeves and legs provide complete coverage, while soft cuffs help retain warmth and keep barrier creams in place.This unique wetsuit combines a soft nylon-polyester fleece lining with a durable Thermoplastic Polyurethane outer shell for comfort, flexibility, and long-lasting wear. It helps extend the time babies can happily enjoy the pool. Easy hook-and-loop fastenings at the back make changing quick and simple for parents.