A 'kettlebell' or girya (Russ.) is a traditional Russian cast iron weight that looks like a cannonball with a handle. The ultimate tool for extreme all-round fitness.

Russian Kettlebells deliver extreme all-round fitness. And no single other tool does it better. Here is a short list of hardware the Russian kettlebell replaces: barbells, dumbbells, belts for weighted pullups and dips, thick bars, lever bars, medicine balls, grip devices, and cardio equipment.

'Not a single sport develops our muscular strength and bodies as well as kettlebell athletics,' reported Russian magazine Hercules in 1913.