Our child livery life jacket comes in one size and fits a child weighing 30-50 pounds. This lightweight and easy to put on life jacket is open on the sides and has three points of closure/adjustments on the chest and a crotch strap to secure the child. The jacket also comes with a black yolk to combat sunscreen and other stains. This life jacket is USCG Type III approved and has a design buoyancy of 7lbs, 8 oz. This life jacket is perfect for boat rentals.