Patent ID: 8911306

Claim:
A golf ball comprising: an inner core layer, wherein the inner core layer comprises a first highly neutralized polymer with a first flexural modulus, a second highly neutralized polymer with a second flexural modulus, and a low flexural modulus ionomer, and wherein the inner core layer has a diameter between about 24 mm and about 30 mm; an outer core layer, wherein the outer core layer surrounds and encompasses the inner core layer, and wherein the outer core layer comprises a rubber composition; and a cover layer, wherein the cover layer surrounds and encompasses the outer core layer, wherein the first highly neutralized polymer is about 20 to 60 parts by weight of the inner core layer, wherein a ratio of the second flexural modulus to the first flexural modulus is less than 2, wherein the low flexural modulus ionomer has a flexural modulus of less than about 8,000 psi, wherein the low flexural modulus ionomer is from about 1 to about 50 parts by weight of the inner core layer, wherein the inner core layer has a first coefficient of restitution measured at 131 ft/s of about 0.810 to about 0.835, a second coefficient of restitution measured at 140 ft/s of about 0.805 to about 0.815, and a third coefficient of restitution measured at 160 ft/s of about 0.775 to about 0.790, where an average of the first coefficient of restitution, the second coefficient of restitution, and the third coefficient of restitution is at least 0.8.