Gellyball Blasters use a soft gel ball that is an orbeez. What are Orbeez? In a nutshell, Orbeez are actually super-absorbent polymers that grow to more than 100 times their volume when placed in water. Shot from the easy-to-use blasters, the soft Gellyballs bounce off kids leaving no stain, mess, and only a small impact. Unlike Nerf guns where the players have to constantly reload with ammo off the floor, a Gellyball Blaster holds 750 shots without reloading! Just pull the trigger and they shoot! Easy even for a 7-year-old to use.