HAND GRIP STRENGTHENER FOR WORKING THE MUSCLES IN THE FINGERS, HAND, WRIST & FOREARM, Suitable for the multitude of offices and sports enthusiasts., Non-slip handles covered with soft, comfortable and durable rubber, Useful for physical or occupational therapy and rehabilitation, the grip strengthener also increases mobility and flexibility in the hand and wrist, relieving painful arthritis, tennis elbow, tendinitis and carpal tunnel.