The Michael Phelps Swim Method products are intended to be used for training young children to swim. They are not toys! The products are buoyant aids to be used during swimming instruction and are to be used only under constant supervision. Technologies & Materials: Outer fabric: 100% Polyester Inner buoyant foam: 100% PE The Michael Phelps Swim Method products are not lifesaving devices, will not keep the wearer's face above water, nor will they protect against drowning. Do not leave the child unattended at any time. Maintain constant contact when required. Read the Instructions For Use and Warning notices included with each product carefully and completely before use. Ensure that the products are suitable for the child's weight and age category. Do not use and immediately discard if a product is damaged. 2 sizes: Target age 2-3 years/ 33 - 39lbs Target age 3-6 years/ 39 - 66lbs