【Age-appropriate】 Suit for 28-48 lbs children(18ms- 7 years). S : Age Recommended 18MS -2 Years -- Weight Recommended 13-16 kg/28-36 lbs M : Age Recommended 3-4 Years -- Weight Recommended 17-21 kg/37-47 lbs L : Age Recommended 5-7 Years -- Weight Recommended 22-30 kg/41-48 lbs 【Comfortable material】 Kids swim vest is hand stitched with super soft, high-quality polyester and cotton-filled material,feature zipper is smooth and doesn't slip easily,hip straps ensure a comfortable fit.which is more soft, more comfortable and more breathable. 【Safer and more intimate】Three adjustable safety buckles design, fastening ring fastened,can better fit the body of the child.all-round protection of your child.extremely thick polyester and cotton-filled material,provides super buoyancy.parents are very relieved and children are very happy. 【Flotation swimming aid】The Swimming vest not only uv protection and sun protection, bright colors,make your child special no matter where they are.For kids who like swimming, surfing,and water sports,this life jacket will be an essential gift.