Patent ID: 8123629

Claim:
A golf ball consisting essentially of: an inner core layer formed from a first rubber composition and having a diameter of from 0.75 inches to 1.05 inches, a center Shore C hardness (H center ) of 50 or greater, and an outer surface Shore C hardness of 80 or greater; an outer core layer formed from a second rubber composition and having an outer surface Shore C hardness (H outer core ) of 85 or greater; an inner cover layer formed from a thermoplastic composition and having an outer surface Shore C hardness (H inner cover ) of 95 or less; an outer cover layer formed from a composition selected from the group consisting of polyurethanes, polyureas, and copolymers and blends thereof; and a moisture vapor barrier layer disposed between the outer core layer and the inner cover layer; wherein H outer core >H inner cover ; and wherein H outer core −H center ≧20 Shore C units.