Product Description The SwimWays Power Swimmer graduated swim training vest gives you everything you need to teach your child how to swim! The 9 inner flotation pads can be removed, one at a time, as your child's swimming ability improves. This creates the perfect environment for your child to learn to swim securely and quickly, and at their own pace. The adjustable elastic side cords and leg strap keep the Power Swimr secure while leaving your child's arms free. Hidden pockets make the removable flotation pads inaccessible during use - so parents have control. Medium size fits most children age 3-6 years and 35-55 lb (15-25kg).