The D'Addario VariGrip gives you a pocket-sized warm up tool that's great for beginners and pros alike. The VariGrip isolates each finger, providing an effective strength-building workout, with its individually adjustable spring-loaded buttons. It's useful for conditioning the fingers, wrist, and forearm, giving beginning players increased fingering strength. Simulated guitar strings are hidden beneath the soft rubber palm grip to faithfully mimic the feel of guitar strings beneath your fingers. When your guitar's not around, stay in playing shape with the D'Addario VariGrip.