Moderate surface friction surface gives the right amount of resistance to the mouse feet when starting or stopping a rapid or sudden movement common to low DPI gaming Consistent surface texture provides the sensor the optimal imagery for translating mouse movement into cursor movement, an improvement over often inconsistent or dirty table or desk surfaces Using a surface texture closest to the optimal testing environment, G640 gives gamers access to the get the fullest Logitech G mouse sensor accuracy and precision Rubber surface helps keep the flexible surface in place and prevents the cloth from bunching up in front of the mouse and interfering with smooth mouse movement Soft material improves comfort as the wrist moves back and forth across the mouse pad's edge