Patent ID: 8177665

Claim:
A golf ball comprising: (a) one or more core layers having a flexural modulus (F 1 ) less than 30 kpsi; (b) an inner mantle layer immediately adjacent to and surrounding the one or more core layers, wherein the inner mantle layer has a flexural modulus (F 2 ) in the range of 15 to 60 kpsi and a thickness of less than 0.08 inches; (c) an outer mantle layer immediately adjacent to and surrounding the inner mantle layer, wherein the outer mantle layer has a flexural modulus (F 3 ) in the range of 30 to 120 kpsi; and (d) one or more cover layers surrounding the outer mantle layer; (e) wherein the flexural modulus (F 2 ) of the inner mantle layer is greater than the flexural modulus (F 1 ) of the one or more core layers by at least 3 kpsi; (f) and wherein the flexural modulus (F 3 ) of the outer mantle layer is greater than the flexural modulus (F 2 ) of the inner mantle layer by at least 12 kpsi.