US Patent 7444938 Paintball grenade

A paintball grenade having an outer bladder and an inner bladder. The outer bladder has a first open end, an opposite second open end, and a cavity therethrough. The inner bladder has a closed end and an open end. The inner bladder is capable of being inserted into the outer bladder whereby the open end is adjacent the first open end of the outer bladder, and the closed end is adjacent the second open end of the outer bladder, the inner bladder being filled with a colored liquid. A securing element is used to secure the first open end of the outer bladder and the open end of the inner bladder.