The Wilson WLabs Project Shift 99/300 Tennis Racquet was specifically crafted to provide players with controllable power and massive spin. Built around the insight of maximum lateral bending and best in class torsional stability, Shift allows players to hit the ball consistently deep in the court with increased confidence and spin on each shot. Shift 99/300 features an 16x20 string pattern for a balance of control, spin, and power.