Volvik Crystal Golf Balls (One Dozen) Volvik is the #1 Color Golf Ball on Tour with 20 LPGA Tour players using Volvik's highly visible golf balls featuring 37 worldwide patents 3-piece Tour Performance - Explosive distance with a soft feel is achieved by World's 1st Patented Dual Core with a soft outer layer/hard inner Volvik Crystal elevates short game control with soft feel, low compression control core for slow/medium swing speeds Enhanced visibility provided by the brightest colors in golf; Available in Pink, Orange, Green, Yellow 80 Compression, 64 Cover Hardness; Optimal for 60-95 MPH Swing Speed