Yacoto Adjustable Grip Strengthener Best Hand Exerciser for Increasing Hand Wrist Forearm and Finger Strength, Adjustable Resistance Range 22 to 88 Lbs (10-40 Kg) The hand grip fits everyone. Everyone can build and improve muscle strength in the hands, fingers, wrists and forearms, such as women, men, seniors and teens. Wonderful to build your muscle. It's also suitable for athletes, sports enthusiasts, and musicians who want to build their muscle. Comfortable to hold and squeeze. The upgraded and enhanced springs that endures long-term frequent repeatable use, and ergonomic non-slip TPR rubber handles make it enjoyable to hold and squeeze. Good way to exercise. Those people who have arthritis, tendonitis, tennis elbow, rheumatoid arthritis, carpal tunnel syndrome can also take exercises with the hand grip, it's a good way to relax and exercise. Easy to take away. And people can put the hand grip into their bag, it's very easy to carry, you can use it anywhere.