This Refill Pack contains 3 foam Jr. Glow Stomp Rockets — to launch these rockets, please use the Stomp Launcher that comes in The Original Stomp Rocket: Jr. Glow in the Dark 4-Rocket Set (20005). The Stomp Rocket Jr. Glow is 100% KID-powered! Run, jump and STOMP to launch these rockets up to 100 feet in the air! All-foam Jr. Glow Stomp Rockets are great for younger kids. They glow in the dark and are perfect for fun all day and after dusk! Stomp Rocket Jr. Glow is strong and durable, and great for active, outdoor play. Stomp Rockets have won lots of awards from industry experts, including iParenting Media, Dr. Toy and Creative Child Magazine. For kids ages 3 and up.