Hi Bore XLS Tour Driver. New for 2008 the Hi Bore XLS Tour driver is designed to precise PGA Tour specifications. Features a 2 degree open face and toe-biased weighting for fade-biased workability. Also features a more traditional compact pear shape than that of the standard driver and has a longer Tour length hosel. At 17% larger than the HiBORE XL, it's Cleveland's largest ever and among the biggest on the market. Full Face Performance (FFP) extends the Hot Zone of maximum .830 COR across a larger portion of the face creating more distance from both solid shots and mishits alike. It has been designed to maximum USGA clubhead dimensions to push the MOI limit. 5300 MOI represents a 13% increase from the HiBORE XL for control off the tee for extremely straight drives. Heel and toe "stability foils" signify where weight has been added to the perimeter of the clubhead to maximize stability.