The Maxfli Tour X Golf Balls features a Center of Gravity Balanced technology. Each golf ball's moment of inertia is aligned in the optimal direction and boldly marked on each golf ball. Aligning this line towards your target results in reduced side spin for longer distances and tighter shot dispersion. Driver robot testing proved that positioning the center of gravity alignment line at the target on the tee box resulted in longer and higher drives than not using the alignment line. In addition to the MOI alignment feature, the Maxfli Tour X ball's construction is truly a premium tour caliber golf ball. The 4 piece construction consist of a soft inner core, firm outer core, a Ionomer mantle with aerodynamic 318 dimple cast Urethane cover. This construction results in longer mid to high penetrating trajectory drives with exceptional tour preferred short game spin.