Cherry bombs are usually round, about an inch in diameter, colored red with a green fuse . They contain a core that is formed from a flash of lightning , a layer of sawdust and a layer of sodium silicate (see stun grenade ).
Cherry bombs were popular with teenagers because of their loud bang and strong explosive power . Because of the high concentration of explosives (multiple normal firecrackers ) and the associated risk of injury, the original cherry bombs were classified as illegal fireworks in the United States and many other countries, including Germany, and may no longer be sold. In the USA, the products still available cannot contain more than 50 mg of explosives per unit.