1) Extra soft urethane cover promotes higher than average spin on partial wedge shots, especially from 30 yards.
2) Firm and fast outer mantle promotes optimal short-iron spin to stop the ball fast without excess "spin-back".
3) Semi-firm middle-mantle promotes mid launch and mid spin off the middle irons for optimal control and distance.
4) Soft inner-mantle promotes high launch and high spin off the long-irons for maximum distance.
5) Small, low-compression core promotes high launch and low spin off the driver for maximum distance.