Patent ID: 8360902

Claim:
A golf ball consisting essentially of: an inner core layer formed from a rubber composition and having a center hardness (H center ) of 60 Shore C or greater, and an outer surface hardness of 80 Shore C or greater; an outer core layer having a diameter of 1.4 inches to 1.55 inches and a specific gravity of from 0.95 g/cc to 0.99 g/cc, formed from a highly neutralized polymer composition comprised of a copolymer of an α-olefin and a C 3 -C 8 α, β-ethylenically unsaturated carboxylic acid and having a material hardness (H outer core material ) of 35 Shore D or greater; an inner cover layer formed from a thermoplastic composition and having a material hardness (H inner cover material ) of 95 Shore C or less; and an outer cover layer formed from a composition selected from the group consisting of polyurethanes, polyureas, and copolymers and blends thereof.