Speedo Swim UV Printed Neoprene Swim Vest Life Jacket, Size M Ages 4-6 Years | Weight Capacity: 45-60 lbs. Safety strap with buckle closure Soft, durable neoprene exterior construction for warmth and buoyancy; Soft polyester inner lining for comfort Full Front zipper with Velcro closure for added safety UV50+ Block the Burn protection from the sun's harmful UVA and UVB rays