Kettlebells are designed to displace their weight away from your body during use, making the physics of lifting them more dynamic. Your stabilizing muscles must work just as hard as those moving the bell. Mastering kettlebell workouts is tough, but their payoff--total body strength and cardio conditioning--well worth it. Or it would be if a complete set of kettlebells didn't take up an entire wall, and if they were less of a pain in the ass to move and store. So thought Stamina, the company that retains the benefits of a kettlebell workout while condensing a full range of the equipment into a single kettlebell.
The Versa-Bell packs 6 individual kettlebells into one, each accessible via a locking pin that adjusts the weight up or down between 16, 20, 24, 28, 32, and 36 pounds. Steel weight plates slide in and out of the spherical shell during adjustment. The Versa-Bell's cast iron handle is standard size, with enough room for a 1- or 2-handed grip. The base is also strong enough to support pushups.