Feature: 1. Can be used for killing time, small size make the grip ball can be easily put in the pocket. 2. Suitable for people who use computer keyboard and mouse for a long time to work with their fingers. 3. Designed with elastic band of the grip ball without wrist tightening feelings, flexible rolling for convenient holding. 4. Firmly fixation and free to adjust the size of the bracelet to make it suitable for your wrist size. 5. Made of a durable, high‑elastic silicone material, flexible hand feelings and suitable for all ages. Specification: Condition: 100% Brand New Item Type: Grip Ball Material: Silicone Function: 1. Rehabilitation training 2. Activities calcined knuckles, palm muscles 3. Pressure finger, activating joint 4. Build finger and arm strength Usage: The size of the grip ball is not large, just in the palm of the hand, hold the ball and hard pinch, you can feel the pressure of the grip ball brought to the fingers.Generally continue to hold many times, you can feel the palm numbness and fever, and then it is very comfortable feeling. Because when pinching the ball, the flexible ball is deformed and filled with the palm, the palm is loose and tight, the ball can effectively stimulate the major acupoints of the palm, promote blood circulation, and achieve the effect of exercise and healthy care. Basic Exercise: Hold the ball completely in the palm of your hand and do ten times hand stretching exercises, first with your right hand and then with your left hand, alternating. Applicable population: 1. Climbers and bodybuilders training finger strength and grip strength 2. Fans of badminton, table tennis, basketball and other ball games 3. Learn to play the piano to exercise finger strength 4. People use computer keyboard and mouse for a long time Cleaning: In order to extend the service life of the silicone grip ball, it is recommended to gently wash with water. Package List: 3 x Grip Ball