The Manual Grip Strength Trainer Helps Reduce Stress And Relieve Daily Work And Muscle Tension.It Is Ergonomic And Soft, Suitable Not Only For Large And Small Hands, But Also For The Elderly And Young , Also Comfortable To Hold.Daily Use Of This Exercise Grip Trainer Will Help Recover From Hand Injuries, Arthritis, Carpal Tunnel, Tenosynovitis, Wrist Fracture, Etc.Made Of High Quality Soft Silicone, Which Is Environmentally Friendly, Odorless, Durable And Can Ensure The Best Exercise Effect.The Forearm Handle With Upgraded Grip Is Ideal To Improve Strength, Strength And Speed In The Wrist, Fingers And Forearm.