Progressive CG positions help to optimize the launch angle and spin rate of each club, and ensure functional distance gaps. The CG position is lower and farther back in the lower-lofted hybrids to increase the launch angle and make them easier to hit in the air. In the mid- and higher-lofted designs, the CG is more forward to minimize spin and prevent ballooning (common in higher-lofted hybrids). Generous camber heel-to-toe and sole relief in the 17-4 stainless steel heads ensure playability and solid contact from all types of lies. A large hitting surface and thin face perimeter provide forgiveness and high ball speeds. A squared-up toe and heel improves consistency and makes alignment easy. They are available in 17°, 20°, 23°, 27°, and 31°, and feature a non-glare charcoal finish that eliminates distractions.