Features1Can be used for killing time, small size make the grip ball can be easily put in the pocket. 2Suitable for people who use computer keyboard and mouse for a long time to work with their fingers. 3Designed with elastic band of the grip ball without wrist tightening feelings, flexible rolling for convenient holding. 4Firmly fixation and free to adjust the size of the bracelet to make it suitable for your wrist size. 5Made of a durable, high?elastic silicone material, flexible hand feelings and suitable for all ages.SpecificationCondition: 100% Brand NewItem Type: Grip BallMaterial: Silicone Function: 1. Rehabilitation training2. Activities calcined knuckles, palm muscles3. Pressure finger, activating joint4. Build finger and arm strengthUsage: 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 strength2. Fans of badminton, table tennis, basketball and other ball games3. Learn to play the piano to exercise finger strength4. People use computer keyboard and mouse for a long timeCleaning: In order to extend the service life of the silicone grip ball, it is recommended to gently wash with waterPackage List3 x Grip Ball