The Wilson Force 145 BLX delivers an increased sweet spot & explosive power due to the Power Holes technology & has a head size of 77.3in 2 (499cm 2). Being head heavy balanced, the racket offers great stability & spin. It integrates the BLX technology for exceptional vibration resistance & a cleaner feedback & comes strung with the Sensation Strike string for a balance of power & precision. The Force 145 is supplied with a 3/4 cover.