This Refill Pack contains 2 foam-tipped Ultra Stomp Rockets that work with three different Stomp Rocket Launch Sets. Launch these rockets up to 200 feet in the air using the Stomp Launcher in The Original Stomp Rocket: Ultra 4-Rocket Set. Manufacturered by Stomp Rocket. Award-winning products from industry experts including iParenting Media Dr. Toy and Creative Child Magazine. Ages 5 and up. 100% KID powered: Run jump and STOMP to launch these rockets up to 20 stories high -- thats 200 feet in the air! No batteries required.