The Callaway Golf HX Tour golf ball has an improved version for 2006. How do you improve on that kind of amazing performance? First, you upgrade the manufacturing process. The CallawayHX Tour is now manufactured using the Company’s proprietary RIM (Reaction Injection Molding) Technology. This key step in the manufacturing process locks in the core and mantle layers to ensure maximum concentricity while injecting an ultra-thin, exceptionally soft cover for high-speed drives and iron shots with plenty of spin. Finally, Callaway Golf engineers devised a new finishing system that creates better adhesion and improved gloss retention so the balls will keep their whiter, brighter finish longer and will better resist scuffing and groove-shear for longer life. The performance differences in the Callaway HX Tour golf ball are a function of the thinness of their covers. The cover of the HX Tour Golf Ball is just 0.018” thick, a tiny variation of just three-thousandths of an inch, but significant enough so that highly-skilled players will notice. The thinner cover of the HX Tour Golf Ball gives it a bit more speed off the driver and, as a result, the ball flies farther down the fairway and still maintains Tour-caliber spin around the greens. The Callaway HX Tour Golf Ball also has the revolutionary HEX Aerodynamic pattern, which replaces conventional dimples, virtually eliminating the ball’s seam and thereby enhancing shot-to-shot consistency. HEX Aerodynamics cover 100 percent of the ball’s surface, creating reduced drag at impact and increased lift in flight for longer, more stable shots, even in the windiest conditions.