My Pool Pal, patented flotation swimsuit is designed to help enhance buoyancy and stability in the water, while allowing a non-restrictive forward, backward and sideways mobility while in the water. My Pool Pal Flotation Swimsuits should be used with adult supervision at all times. Hands-on assistance should be provided for small children learning to balance in the water. Swimmer"s performance varies according to body density, weight, age, ability, environment and experience. Rated 35 SPF. Sizes: Extra Small: 20 to 30 lbs, Small: 30 to 40 lbs, Medium: 40 to 50 lbs, Large: 50 to 70 lbs.