Srixon's New Distance Golf Balls Deliver Extreme Ball Speeds And Excellent Control In A 2-Piece Design That Doesn't Compromise. With A Fastlayer Core And That Is Soft At The Centre And Gradually Firmer Towards The Outer, Distance Balls Offer Both High Ball Speeds And Great Feel. NEW Spin Skin With Serm A Soft, Thermoplastic Urethane Cover Features Spin Skin With Serm, A Durable Coating With Flexible Molecular Bonds. It Digs Deep Into Wedge And Iron Grooves, Maximizing Spin For More Control And More Stopping Power A Newly Formulated Inner Core Adds Resiliency For Even More Ball Speed NEW Fastlayer Core Starts Soft In The Center And Gradually Becomes Firm Around Its Edge, Giving High-Speed Players Exceptional Feel And Plenty Of Ball Speed For Maximum Distance. 10311204