It is lightweight and easy to carry. Best for building hand and forearm strength for added performance in any sports.?Ideal for improving strength, power and speed in the wrists, fingers and forearms. Suited for athletes, musicians, rock climbers, golfers and tennis players.?The hand grippers also work great for rehabilitation. If you suffer from rheumatoid arthritis, arthritis, carpal tunnel, tendonitis, tennis elbow and are on the way to recovery from a fractured or broken wrist, or tendon surgery, then this is the perfect gripper for you.