GOLF CLUB HEAD WITH INCREASED MOMENT OF INERTIA AND EXPANDED SWEET AREA

摘要

PURPOSE: A golf club head is provided, in which moment of inertia is increased so that a sweet area can be expanded, while a crown portion is sufficiently easy to bend so that a launch angle is increased and a flying distance is consequently increased even when a golfer having a low head speed uses the golf club head. CONSTITUTION: The golf club head includes a front body(10), a back body(12), and a middle body(11). The front body has a face portion(2). The middle body is disposed between the front body and the back body, and extends from a toe side of a side portion to a heel side of the side portion through a crown portion(11a) bending upwardly. Material of the middle member is lower in longitudinal elastic modules and specific gravity than material of the front body and material of the back body.