Abstract: A golf glove includes a body panel forming an area including at least a portion of a palm portion to be in contact with the palm of the wearer, and fourchettes sewn up with the first panel at portions to be in contact with the fingers of the wearer. The body panel has a widened portion provided to widen a portion to be in contact with a portion other than a finger joint of the wearer on the palm side, and a recess provided to reduce the width of a portion to be in contact with the finger joint of the wearer on the palm side to be narrower than the widened portion. The fourchette has a protrusion formed to be complementary to the recess.

Abstract: A groove is provided a surface on a cavity portion side of a sole portion in a head portion of an iron golf club, and a thickness of a ball hitting portion in a face portion is made larger than a thickness of a top edge side portion of the face portion and at least as large as a thickness of a sole side portion of the face portion. In a golf club set according to the present invention, the groove has the greatest depth in a long iron golf club, while the groove has the smallest depth in a short iron golf club or no groove is provided in the short iron golf club.

Abstract: A groove is provided a surface on a cavity portion side of a sole portion in a head portion of an iron golf club, and a thickness of a ball hitting portion in a face portion is made larger than a thickness of a top edge side portion of the face portion and at least as large as a thickness of a sole side portion of the face portion. In a golf club set according to the present invention, the groove has the greatest depth in a long iron golf club, while the groove has the smallest depth in a short iron golf club or no groove is provided in the short iron golf club.

Abstract: A golf club according to the present invention comprises a face portion (1) and a neck portion (2), and metal flow lines (3) continue from the face portion (1) to the neck portion (2). These metal flow lines (3) extend in a single direction on the face portion (1). A method of manufacturing a golf club according to the present invention comprises steps of bending a rod member subjected to drawing plastic working on an end and forging the rod member after the bending for integrally molding a face portion (1) and a neck portion (2).

Abstract: The golf club shaft according to the present invention is provided with a pseudo-cylindrical concave polyhedral shell structure composed of triangles or trapezoids on the entire outer circumferential surface or on a part of the outer circumferential surface. With this structure of the golf club shaft, the degradation in the mechanical strength and the increase in the material cost are prevented. At the same time, a lighter weight golf club shaft can be produced while a greater degree of freedom is allowed in designing the characteristics such as bending stiffness distribution, a kick point position, bend point, etc. upon designing the golf club shaft.

Abstract: At least a part of a head portion of a golf club consists of stainless steel containing throughout 0.1% or more to 0.3% or less by weight of nitrogen. Further, at least a part of the head portion consists of a corrosion-resistant metal having a yield strength of 0.2% of 350 MPa or more to 600 MPa or less, a tensile strength of 500 MPa or more to 800 MPa or less and an elongation after fracture of 40% or more to 60% or less.

Abstract: A groove is provided a surface on a cavity portion side of a sole portion in a head portion of an iron golf club, and a thickness of a ball hitting portion in a face portion is made larger than a thickness of a top edge side portion of the face portion and at least as large as a thickness of a sole side portion of the face portion. In a golf club set according to the present invention, the groove has the greatest depth in a long iron golf club, while the groove has the smallest depth in a short iron golf club or no groove is provided in the short iron golf club.