DescriptionGrip strengthen balls, made of TPR environmental material without pollution, and touch comfortable, with a string, easy to carry. Exercise and strengthen hands , fingers , wrists strength so that relieve stress and muscle tension from computer work. String design make it not easy to loss and run away.Features- Color: Blue, Yellow, Green. - Material: Silicone. - Size: About 5x5x5cm. - Grip strengthen balls, help to decompress yourself after working or study for long time. - With a high elasticity string, avoid slipping out and easy to carry out. - Exercise and strengthen hands, fingers, wrists strength so that relieve stress and muscle tension. - Prevents stiffness, increases flexibility, and reduces joint pain. - Suitable for people of all ages. Easy to carry for outdoor use.
