In still another embodiment, the cover has an inner cover layer having a hardness of about 50 Shore D to about 70 Shore D and an outer cover layer having a hardness of about 30 Shore D to about 70 Shore D. Another aspect of the invention relates to a golf ball including a core and a cover, wherein the cover is formed from a polyurethane-based composition including a prepolymer, a block copolymer,