This adjustable hand grip strengthener features an ergonomic design with a non-slip rubber grip and durable stainless steel spring, making it ideal for users of all ages and hand sizes. It’s perfect for improving grip strength, endurance, and flexibility in the fingers, wrists, and forearms—great for athletes, musicians, or stress relief on the go. With adjustable resistance from 22 to 132 lbs (10–60 kg), it caters to various fitness levels and allows a wide range of exercises.