Stomp Rocket Dueling Rockets, 4 Rockets [Packaging May Vary] Challenge your friends: This special Dueling Base lets 2 kids launch rockets at the same time, so you can see whose goes higher! 100% KID powered: Run, jump and STOMP to launch these rockets up to 20 stories high -- that's 200 feet in the air! Winner of Creative Child Magazines 2014 Preferred Choice Award Includes 4 Ultra Stomp Rockets and a special Dueling Base featuring 2 Stomp Launch Pads No batteries required; super easy, fast assembly. Ages 6 and up