New reverse colors! The Wilson Blade 98 (18 x 20) offers players classic control and is now equipped with a technology that maximizes a player's energy. Countervail is an all-new material technology integrated into the frame that maximizes a player's energy by reducing muscle fatigue and shortening recovery time. By directing the ball's energy within the frame instead of to the body, Countervail conserves a player's energy on every swing. Designed for the players with a big-hitting, aggressive game, the 18 x 20 offers the most precision in the Blade family.