The Hyperlite Pro V life vest is a USCG approved type II vest designed to keep your little ones safe while on the water. The vest also has segmented and hinged foam which results in a very flexible, easy to wear vest. The exterior shell is made of Biolite material which is breathable, flexible, and lightweight, ensuring comfort while on the water. Built-in crotch strap secures the vest on your child and prevents it from riding up while in the water. Buoyant headrest for face-up floating. Pull strap makes it easy to hoist child from water. For infants up to 30 lbs.