STEARNS Puddle Jumper Child Hydroprene Life Vest, Small The US Coast Guard-approved design is specially-fitted for children 30-50 lbs. Ergonomic design for enhanced ease of movement Your child will have a blast finding new ways to have fun on the water with the Stearns® Puddle Jumper® Child Hydroprene™ Life Jacket. Lightweight Hydroprene™ material is our softest material, and when combined with the durable Crosstech® foam, it's perfect for comfortable, all-day wear. Two buckles and a zippered opening make it easy to get your child in and out of the vest, while an adjustable leg strap ensures a secure fit during all the fun at the pool, beach or lake.