JUMP, BOUNCE, AND SQUEAK: Stomp Rocket Stomp Hopper is a fun way to pogo with friends! Includes one Stomp Hopper. Recommended for ages 3 and up. EASY TO ASSEMBLE: Stomp Hopper is 100% kid powered – that means there are no batteries required and no cords or plugs to fumble with. The Base is made of high-bounce foam and the hand grips are soft, perfect for small hands. Bands stretch up to 48 inches. LEARN THROUGH PLAY: A great way for kids to exercise and learn balance. Jump, bounce, and start the journey into STEM (Science, Technology, Engineering, Math) learning. HOURS OF ACTIVE FUN: Squeaks when you stomp! Perfect for indoor or outdoor screen-free fun. Great for kids and adults. THE ORIGINAL FOAM TOY ROCKET LAUNCHER: For 30 years, Stomp Rocket has been entertaining kids around the world through fun, active play and STEM learning opportunities. Happy Stomping!