1. Soft Trionomer Cover This soft cover blend is built for maximized ball speed with every club and pinpoint control around the green. 2. Dupont HPF Mantle This mantle is designed for explosive ball speed and lower spin off the driver for maximum distance, while also providing excellent feel. 3. Polybutadiene Core Hex Aeordynamics HEX Aerodynamics creates long, penetrating distance, reduces drag and promotes a stable ball flight that holds its line in the wind. About Callaway Golf For 25 years, Callaway Golf has helped countless golfers experience the sweet sensation of striking the ball perfectly, more often. Every day, Callaway works to find new ways to deliver that ideal moment. The company"s founder, Ely Callaway, understood that in the heart of every golfer lies the desire to achieve the pure shot, and that"s why he built a company based on that very philosophy. An entrepreneur and former winemaker, Ely brought big thinkers and big technology to an ancient game, challenging the status quo along the way. Specifications Construction: 3-Piece Ball Size: 1.684 Ball Target Weight: 45.5