Patent ID: 7819759

Claim:
A golf club head which is metallic and hollow and has a face part, a sole part, a side part, and crown part, wherein: a thick part, having an increased wall thickness, is provided in a central portion in the toe-heel direction of the rear portion of the crown part, the thick part has a rear side width, in a toe-heel direction, not less than 20% and not greater than 80% of a maximum width of the crown part, in a toe-heal direction, the width in the toe-heel direction of the thick part increases from the foremost portion of the thick part toward the rear portion of the crown part; the average thickness of the crown part excluding the thick part is 0.4 to 0.9 mm, the average thickness of the thick part is 0.9 to 3.0 mm, and the difference therebetween is 0.2 to 2.5 mm, and in the plan view of the golf club head, the distance a between the front edge portion of the thick part and the foremost portion of the crown part is 20 to 80% of the length L in the front and rear direction of the crown part.