The Volkl V8 Pro Unstrung Tennis Racquet has improved super grommets and V-Cell technology that is a lightweight graphite that will improve responsiveness and feel. This racquet also features Reva technology that helps eliminate racquet vibration for a smooth feeling frame. There is a silicone polymer in the butt known as Vtex and this racquet is great for aggressive baseline players that want a spin friendly frame with an awesome mixture of power and control.