Embodiments of golf club heads comprising a head interior bounded by a head front portion, a head rear portion, a head heel portion, a head toe portion, a head top portion, and a head sole portion, the golf club heads further comprising various optimized characteristics including optimizing the head center of gravity height and depth in relation to the head volume and mass, are presented herein. Other examples and related methods are also disclosed herein.

Embodiments of golf club heads comprising a head interior bounded by a head front portion, a head rear portion, a head heel portion, a head toe portion, a head top portion, and a head sole portion, the golf club heads further comprising various optimized characteristics including optimizing the head center of gravity height and depth in relation to the head volume and mass, are presented herein. Other examples and related methods are also disclosed herein.

A golf club head comprising two components, wherein the first component comprise a ball striking surface, a striking face return, and a sole extension with a rear mass. And wherein the second component comprises a lower density material, comprising part of the crown and part of the sole. The first component comprises a majority of the mass of the golf club head, having a rear mass comprising 20% to 35% of the mass of the golf club head.

A golf club head comprising two components, wherein the first component comprise a ball striking surface, a striking face return, and a sole extension with a rear mass. And wherein the second component comprises a lower density material, comprising part of the crown and part of the sole. The first component comprises a majority of the mass of the golf club head, having a rear mass comprising 20% to 35% of the mass of the golf club head.

A head fitting film for club head protection includes: a protective film (10) attached to a surface of a club head and protecting the club head; an adhesive layer (20) formed on a side of the protective film (10); and a release paper (30) detachably attached to a bottom of the adhesive layer (20) and protecting an adhesive, wherein the protective film (10) is divided into multiple segments corresponding to an external shape of a club head such that the weight and a center of gravity of the club head are adjusted in accordance with the number of segments and attachment position of the protective film (10) that is attached to the club head.

A head fitting film for club head protection includes: a protective film (10) attached to a surface of a club head and protecting the club head; an adhesive layer (20) formed on a side of the protective film (10); and a release paper (30) detachably attached to a bottom of the adhesive layer (20) and protecting an adhesive, wherein the protective film (10) is divided into multiple segments corresponding to an external shape of a club head such that the weight and a center of gravity of the club head are adjusted in accordance with the number of segments and attachment position of the protective film (10) that is attached to the club head.

A golf club head that is capable improving on the inertia properties of a golf club head all while also improving the Center of Gravity (CG) location is disclosed herein. More specifically, the golf club head in accordance with the present invention achieves a relative low Moment of Inertia (MOI) about the Z-axis (MOI-Z) as well as a relatively low MOI about the Shaft-axis (MOI-SA), all combined with a high MOI about the X and Y-axis (MOI-X and MOI-Y) and maintaining a consistently and relatively low CG location measured along a direction tangent to the hosel axis along the X-Y plane (CG-B).

A golf club head that is capable improving on the inertia properties of a golf club head all while also improving the Center of Gravity (CG) location is disclosed herein. More specifically, the golf club head in accordance with the present invention achieves a relative low Moment of Inertia (MOI) about the Z-axis (MOI-Z) as well as a relatively low MOI about the Shaft-axis (MOI-SA), all combined with a high MOI about the X and Y-axis (MOI-X and MOI-Y) and maintaining a consistently and relatively low CG location measured along a direction tangent to the hosel axis along the X-Y plane (CG-B).

A golf club head includes: a body having an outer surface; a recessed channel formed in the outer surface; and a weight assembly including: a weight at least partially disposed within the recessed channel and configured to move therein, the weight including a main body and a protruding tongue, the protruding tongue including a distal tongue portion and a proximal tongue portion, a cover extending at least partially over the recessed channel, having a window cutout shaped and sized to block at least part of the distal tongue portion from moving through the window cutout, and having a slot cutout forming, together with a portion of the window cutout, an opening in the cover that is shaped and sized to allow movement of the distal tongue portion through the opening, and a slot wedge at least partially filling the slot cutout and forming a portion of the window cutout.

A golf club head includes: a body having an outer surface; a recessed channel formed in the outer surface; and a weight assembly including: a weight at least partially disposed within the recessed channel and configured to move therein, the weight including a main body and a protruding tongue, the protruding tongue including a distal tongue portion and a proximal tongue portion, a cover extending at least partially over the recessed channel, having a window cutout shaped and sized to block at least part of the distal tongue portion from moving through the window cutout, and having a slot cutout forming, together with a portion of the window cutout, an opening in the cover that is shaped and sized to allow movement of the distal tongue portion through the opening, and a slot wedge at least partially filling the slot cutout and forming a portion of the window cutout.