3 Pcs Hand Therapy Ball for Finger Exercise, Ball, Silicone Stress Relief, Relieve Joint Pain

【Material】: The hand stress balls are made of high quality thermoplastic rubber (TPR) and food-grade silicone, which retain the original shape after repeated compression and strain. 【Portable Kit】: This kit is suitable for anyone to exercise their hands anywhere, whether you are sitting at home watching TV, walking down the street, having lunch break in the office or anywhere else you want to exercise. 【Safety】: With ergonomic design and unique textured surface, it fits perfectly in your hands. After repeated compression, it can still maintain its original shape, easy to clean and wipe dry, durable and safe. 【Functions】: Using the finger stress ball to improve hand strength, finger dexterity, joint flexibility. They can also be used to aid injury recovery, relieve muscle pain and relieve stress. 【Wide Applications】Silicone hand therapy ball kit is ideal for athletes who practice baseball, tennis, golf, boxing and fitness, outdoor adventurers who love climbing and bodybuilding, musicians who play piano, guitar, bass and violin, and people who suffer from daily stress.