The kettlebell (KB, K-Bell, or KBell) or girya (Russian: гиря) is a traditional Russian cast iron weight resembling a cannonball with a handle. They have been in existence for quite some time, being widely popular among old-school strongmen, both in Russia and Western circles. The kettlebell has once again become a popular exercise tool due largely to the promotional efforts of strength and flexibility coach Pavel Tsatsouline and World Champion, World Record Holder Valery Fedorenko.