Volvik Vista iS Golf Balls (1 Dozen) The #1 Color Golf Ball on Tour with 20 LPGA Tour players using Volvik's highly visible golf balls with world leading technology w/37 worldwide patents This 4-Piece ball provides the best playability for tour players and advanced golfers with added greenside spin and a softer feel World leading technology with 13 patents for the US, UK, Japan and Korea Soft impact and feel and longer flight distance is achieved by World's First Patented Dual Core: a soft outer layer and a hard inner core 95 Compression, Shore D hardness scale 45