| Features: 1¡¢1. Simple exercise: The grip training device is divided into three strengths (5 pounds, 15 pounds, and 30 pounds resistance), which can improve finger flexibility and grip strength for mountaineering, fitness, tennis, baseball, boxing, golf and shooting. It can relieve some tension and anxiety of guitarists, bassists, pianists and violinists. 2¡¢2. Scope of application: enhance hand strength, perform hand rehabilitation training, relieve stress, obsessive-compulsive disorder, autism, ADD/ADHA, muscle memory, etc. When using, start with the resistance ball with the least pressure, and the opening and holding of the hand should follow the elasticity of the ball. After 2-3 minutes, pal… | |