The iDi marks a big step forward in driving iron and long-iron performance, giving better golfers the flexibility of three loft choices to fit their distance number and trajectory window. Loft offerings are optimized for launch and spin in 2, 3 & 4 irons with a thinner, forged maraging steel face that flexes to increase ball speed and distance. The 2 is a traditional driving iron, delivering low launch and spin. The 3 (mid launch, mid spin) is designed as a driving iron or long-iron replacement. The 4 launches higher with more spin, making it easier to hold greens and is also recommended as a long iron replacement. The 17-4 stainless steel head is both deeper front to back and shallower, which allows for 15% higher MOI on high/low impacts, and makes room for the new inR-Air technology. inR-Air is a pocket of air in the club head that damps sound and improves feel. The covered cavity and i-Beam structure help reduce vibration. In addition, iDi is shorter heel-to-toe to make it easier t