Level 2 swim trainer vest: Supports your child in feeling comforable in the water; promotes confidence and play Secure, adjustable fit: Easy-to-wear swim vest includes padded shoulders, a heavy duty fabric-covered zipper and adjustable padded safety strap for a secure, comfortable fit; adult supervision required when kids are in the water Soft fabric swim vest: Comfortable form-fit vest is designed to propel your child forward and promote the use of arms and legs; protective UPF 50 fabric keeps your child's upper body safe from the sun's rays Built-in foam pads: Flex-form pads balance flotation and place your child in the prone swimming position Medium/large size: Recommended for ages 4-6 years; weight capacity: up to 50 pounds; packaging may vary.