The dual grip medicine balls help to train the body to function as a unit rather than separate parts. Dual grip exercises mimic natural body positions and movement speeds that occur in daily life and athletic situations. This functionality is a growing feature of many current forms of training. It is recognized that strengthening through dynamic movements improves balance and coordination and increase conditioning and flexibility. The design also allows many kettlebell exercise movements to be mimicked. Available in 4kg, 6kg, 8kg, 10kg, 12kg.