?SERVICE?: Our friendly customer service professionals are always standing by to help.If you have any questions, please feel free to contact us and enjoy your exclusive service. ?ADD?: Except using for disease recovery,everyone can just put them on hands,do fitness training and strengthen hands muscle and it can relieve stress and anxiety. ?DESIGN?: Ergonomic ball design, more suit for your palm. Rope at the wrist design for non-slip. High elastic TPR material (environmental protectionand and tasteless ). ?CROWD?: The finger exerciser ball suits for stroke patient office worker, elderly. ?INSTRUCTIONS?: Our finger squeeze ball help user recover strength finger and forearm muscle, relieve spasm finger, numb, promote blood circulation.