ZRWA09 Gel Grip strength ball 

Includes FREE carry bag for easy storage and travel

Develop and strengthen grip , hands , fingers , wrists

Relieve stress and muscle tension from computer work

Prevents stiffness , increases flexibility , and reduces joint pain

Keep your fingers , forearms , and hands stronger wile easing stiff joint pain . Use the all three balls to achieve variable resistance training and customize for individual needs and goals . Improves your grip and finger strength , which benefits rheumatoid arthritis , rock climbing , Fitness , carpal tunnel rehabilitation , golf , violin , tendonitis , handball , guitar , piano , surgery recover.

Color coded balls identify the level of flex from each strengthener ball . All balls are the same size because of their ergonomic design , they are the correct diameter to fit comfortably in your hand as you exert force .