Patent ID: 8100781

Claim:
A golf club head having a high moment of inertia and a low center of gravity comprising: a hitting surface; an aft wall; a heel wall connecting the hitting surface to the aft wall; and a toe wall connecting the hitting surface to the aft wall, wherein the golf club head has a volume of greater than about 450 cc, wherein the moment of inertia, I xx , is the moment of inertia about the horizontal axis through the center of gravity of the golf club head, and a moment of inertia, I yy , is the moment of inertia about a vertical axis through the center of gravity of the golf club head and is about 4730 g·cm 2 to about 5830 g·cm 2 , the ratio of I xx /I yy is between 0.665 and 0.754 to improve the rotational moments of inertia for off center hits in the vertical direction, and wherein from a top view of the golf club head, the heel wall and the toe wall each contain a substantially straight portion, and wherein the center of gravity is between 0.807 and 1.017 inches behind a shaft axis.