The Hyperlite Pro V Life Vest offers a great fit to help keep your little ones safe while on the water. The unique True Fit design has a "V" split in the back of the vest that allows a comfortable fit for all sizes of children. The vest also features 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 for extra 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. USCG approved type III. Length: 16". For 30-50 lb. children. True Fit design for a great fit Segmented and hinged foam for flexibility Lightweight Biolite shell USCG approved type III Fits 30-50 lb. children