SAFE FIT: This life jacket for infants 0-30lbs has a waist and leg buckle straps ensureing that the vest stays snug around your little one. The vest is designed for safety, while being one of the most comfortable for your infant ENHANCED BUOYANCY: The O'Brien infant life jackets are uniquely designed with an innovative foam core & constructed buoyancy panels, providing optimal flotation for whatever water sport you’re getting into RANGE OF MOTION: Designed to enable a full range of motion, our infant life jackets allow infants to move while the head support keeps heads out of the water UNIQUE DESIGN: The life vest for infants have a unique eye-catching design that is incredibly breathable, flexible & lightweight. O'Brien's infant size life jacket are sure to help your child feel comfortable whether they are boating or swimming. PREMIUM MATERIALS: The life vest for infants are crafted from Biolite foam, that provide outstanding durability & longevity. Durable, stylish and US Coast Guard Approved in one! Purchased by me for my granddaughter. Wore it a couple of times and then learned how to swim!