Patent ID: 7261645

Claim:
A hollow golf club head comprising: a metal member made of at least one kind of metal material having at least one opening in a crown portion thereof; and a FRP member made of a fiber reinforced resin attached to the metal member so as to cover the opening, the fiber reinforced resin formed from a plurality of prepreg plies each having a magnitude covering the opening, and the prepreg plies comprising a plurality of unidirectional plies each having fibers aligned along an unidirection, wherein the unidirectional plies comprise at least “n” (in this case, “n” is an integral number not less than 3 and not more than 6) kinds of plies each having fibers aligned in different directions, the “n” kinds plies being used in successive unidirectional plies, the unidirectional plies are laminated without directly laminating the same kind of two plies, and in a standard condition of the club head being grounded on a horizontal plane and oriented at its lie angle and its loft angle, the directions of the fibers of the “n” kind of unidirectional plies, in plan view, intersect at an angle (180/n) degrees obtained by substantially dividing 180 degrees by the integral number n in the crown portion.