The Smart Medicine Ball Rack allows you to easily store up to four medicine balls on the space-saving wall mounted rack. The package includes 4 of our Self-Guided Smart Medicines balls, which are textured for a more reliable grip! Included with the Smart Medicine Ball Rack is (1) Smart Medicine Ball, 4lb (Yellow), (1) Smart Medicine Ball, 6lb (Orange), (1) Smart Medicine Ball, 8lb (Green), and (1) Smart Medicine Ball, 10lb (Blue).