Features13D Massage Bump Point Design: can effectively massage the palm acupoints while exercising grip strength. 2Acupoint Massage Design in the Reflection Area: stimulate acupuncture points, regulate health of human internal organs, and reduce diseases. 3Ventilation: heightening bumps can effectively reduce contact between skin and ball, and middle is ventilated and breathable, and palms will not be stuffy and hot. 4Anti Drop Design: not easy to fall, and can be practiced separately, and it can avoid falling off when the grip is insufficient. 5Sub Finger Design: If the user's fingers are not flexible, it can effectively prevent the ball from falling off.SpecificationItem Type: Finger Exerciser BallMaterial: TPRFunction: Exercise finger and arm strength. The size of the grip ball is not large, just hold it in the palm of your hand, hold the grip ball, pinch it hard, and you can feel the pressure of the grip ball on your fingers. Generally, if you continue to hold it for N times, you will feel numbness and heat in your palms, and then you will feel very comfortable. Because when the force ball is pressed hard, the flexible ball deforms and fills the palm of the hand. As soon as the palm becomes loose and tight, the ball can effectively stimulate the acupuncture points of the palm to achieve the effect of exercise and health care.Applicable People:1. Extensor muscle and finger extensor function exercises to prevent and correct contracture stiffness.2. Paralysis of wrist extensor and finger extensor muscles (radial nerve palsy).3. In patients with hemiplegia, the fingers and wrists are dysfunctional, and the fingers and wrists are weak. Through training, the muscle strength and joint activities of related parts can be improved.4. Control increase of flexor muscle tension and muscle atrophy of thenar.5. Prevent finger flexion and spasm, prevent finger joint deformation and deformity.6. While correcting the fingers, it assists in training the flexibility of the fingers.Package List1 x Finger Exerciser Ball