Power Swimr Swim Training System (Medium) As kids get older, they're ready to begin truly learning to swim. They've mastered water balancing and paddling and they may already have some other swimming skills. Swim Step 3, the Power Swimr Swim Training System, is perfect for kids at this stage - it's just like training wheels for the water! Graduated flotation gives you the tools to progress your child's swimming ability at her own pace, helping her feel more empowered in the water Complete freedom of movement and the proper swimming position help kids take to the water naturally Perfect for kids who are ready to swim! Ages: 3-6 (Approx. 35-55 lbs.)