BOOST the power of your smash with the ultimate pro accessory. Made out of flexible and soft natural rubber, this accessory will perfectly adjust to your grip, allowing you to maximize your game! Developed and engineered by Volt. Anti-slip stopper Ergonomic shape Easy assembly 8 grams of soft and natural rubber Maximize the power of your smash The Booster is a small cap to be applied on the base of the racket handle, that helps to prevent hand slipping and concentrates the power on the grip.