Function and Benefit:
Keep your fingers,forearms,and hands stronger while easing stiff joint pain.Use the all three balls to achieve variable resistance training. Improves your grip and finger strength , which benefits rheumatoid arthritis,rock climbing,fitness ,carpal tunnel rehabilitation,golf,violin,Tendonitis,handball,guitar,piano,surgery recovery,shooting,table tennis,and gymnastics . Color-coded balls identify the level of flexibility . All balls are the same size because of their ergonomic design , they are the correct diameter to fit comfortably in your hand as you exert force .
Single Ball Dimensions: 2×2 inches ; 2.4ounces
Shipping Weight: 12.3 ounces
Store in dark enviroment and avoid sunlight.