The unique, contoured shape of the Shape Kettlebell is ergonomically designed to reduce the impact of any exercise where the kettlebell contacts your wrist and arm. This provides a much more comfortable Kettlebell experience. The Ergonomic Shape Kettlebell is made of an iron core and covered with vinyl protection. This covering helps prevents the Kettlebell from damaging your floor. The iron on the handle is exposed to offer superior grip and ease of movement when doing such exercises as cleans and snatches. The vinyl covered Kettlebells are ideal for home or gym training.