Patent ID: 8795101

Claim:
A golf club head provided with a hollow comprising a head main portion made of metal material and having at least one opening, a cover member made of fiber reinforced resin and covering the opening, the opening comprising a crown opening region provided in a crown portion and a sole-side opening region provided in a sole portion and a side portion, the crown opening region having an opening area projected onto an outer surface of the club head being in a range of from 63% to 77% of a superficial area of the crown portion, the sole-side opening region having an opening area projected onto the outer surface of the club head being in a range of from 4% to 25% of the superficial area of the sole portion and the side portion in sum total, wherein in a standard state in which the head is disposed on a horizontal plane so that a center line of a club shaft is inclined at the lie angle within a vertical plane and a club face forms its loft angle with respect to the vertical plane, a bottom view of the head has a face-heel region and a back face-heel region, the face-heel region is a region which is located in front and heel side when the bottom view of the head is divided as four regions by a first straight line parallel with the center line of the club shaft and passing through a center of gravity of the head, and a second straight line being at right angle to the first straight line and passing through a center of gravity of the head, the back face-heel region is a region which is located in back and heel side area of the four regions, and the sole-side opening region is disposed in the face-heel region and/or the back face-heel region.