Sizes: S(with leg strap, 30-50 lbs.), L(50-90 lbs.).Whether they're on a boat, a tube, water skis or a personal watercraft, your children will have a blast wearing the StearnsA(R) Classic Series Life Vest. It comes in two sizes, specially fitted for your kids. The Coast Guard-approved life jacket is designed with open sides with three adjustable chest belts for a great fit. The smaller size, for kids 30-50 lbs, has a crotch strap for a more secure fit and better movement. Durable nylon construction and PE flotation foam, along with 1-in. (2.54 cm) webbed straps will allow you to use this vest, season after season.Coast Guard-approved life jacket.Great for a day on the boat or beach and in the pool or lake.For use on a boat, a personal watercraft or for tow sports.Two sizes: S fits kids 30-50 lbs, L fits kids 50-90 lbs.Adjustable 1" webbing straps and open sides for better fit.Small size has crotch strap for added security.Durable construction: Nylon shell, PE foam.