Crystal golf balls, crystal balls, golf balls 1>Material: Surlyn /rubber with crystal powder 2>Used as golf gift, promotional gift and so on. 3>Beautiful design and new technology 4>Crystal golf ball features a unique semi-transparent two piece construction to provide both outstanding distance and exceptional soft feel. 5>The interaction between Surlyn and the high-energy core ensures maximum energy transfer from the clubface to the golf ball, so you can drive the ball over longer distance. 6>The softest feeling comes from resilient soft Surlyn cover and the low compression enhanced core products substantially better spin and feel creating extra long and straight shots.