The Wilson Burn FST 99 features FST (Fast Speed Technology), an octagon frame geometry and a head-light balance that allows the racquet to move fast through the air for quick racquet head speed. The 99 model offers players a bigger sweet spot without losing control due to the 18 x 19 string pattern. It also is designed with the X2 ergo handle, which is a customized handle shape that provides optimal personalized feel for the modern two-handed backhand. It is lighter than the 95 sq. in. version for players who need more maneuverability. Recommended for advanced players with stronger, faster strokes.