D+L Company Ultra Stomp Rocket Refills (Blue) Kid-powered: You stomp on the launch pad to send these Ultra Stomp Rockets up to 20 stories high -- that's 200 feet! Includes 2 foam-tipped Ultra Stomp Rockets Refill for The Original Stomp Rocket: Dueling Two-Person 4-Rocket Launch Kit (20888); The Original Stomp Rocket: Ultra 4-Rocket Launch Kit (20008);The Original Stomp Rocket: Ultra 4-Rocket Launch Kit (20082) and The Original Stomp Rocket: Ultra Party Pack - Stomp & Squeeze 30-Rocket Launch Kit (20855)