Knockerball bubble soccer has taken the world by storm due to its innovative and fun approach to a traditional sport. The idea is simple: players get inside of an inflatable Knockerball that acts as a protective barrier, similarly to a human hamster ball, and play soccer (or any game) with their head and upper body safely covered. Unlike a human hamster ball, however, the players' legs are free in a Knockerball, which allows them to run, jump and flip while being fully immersed in a spherical shield from the thighs up & that is where the fun begins!