Product Description Engineered for golfers who demand maximum performance. The Srixon Z-STAR XV golf ball delivers unmatched technology with incredible feel so golfers can elevate all aspects of their game to score better. ENERGETIC GRADIENT GROWTH (E. G.G.) CORE TECHNOLOGYKEY INNOVATION: Redesigned Dual Energetic Gradient Growth Core. KEY PLAYER BENEFIT: Even better launch conditions for category-leading distance off the tee338 SPEED DIMPLE PATTERNKEY INNOVATION: More aerodynamic 338 Speed Dimple Pattern. KEY PLAYER BENEFIT: Improved flight performance for additional gains in distance and full shot control. THIRD GENERATION SPIN SKIN COATINGKEY INNOVATION: Softer, more elastic Spin Skin coating. KEY PLAYER BENEFIT: Softer feel, enhanced greenside spin and more consistent spin on approach shots from any lie, especially from the rough.