Color-coded hand exerciser for a full range of applications. Helps strengthen grip, increase dexterity, mobility, and improve fine- and gross-motor skills. Provides variable resistance training for hands, fingers, and forearms. Versatile enough for both hot and cold therapy. Additional resistances sold separately. See W30093 for soft, W30363 for medium, W30427 for firm, and W30443 for a hand exerciser set which contains all four resistances.