Golf club head

A golf club head, comprising:

• a club head body having an external surface with a heel portion, a toe portion, a crown portion having a forward crown area, a sole portion, and a club face;
• a club head volume of at least 360 cm3;
• a front opening formed in the club face and comprising a recess defined by a perimeter surface of the front opening and a frame wall extending into the front opening, the frame wall comprising and outer frame wall surface and an inner frame wall surface opposite the outer frame wall surface;
• and
• a face plate received in the recess of the front opening, wherein an inner surface of the face plate is secured to the outer frame wall surface, wherein the face plate defines a ball striking surface opposite the inner surface and having a geometric center, wherein the face plate comprises a non-metallic material having a first material density, and wherein the face plate comprises a variable thickness;
• wherein the crown portion comprises:
• an outer crown surface and an inner crown surface, and
• a crown height measured relative to the outer crown surface and a ground plane when the club head is in a normal address position, wherein:
• there is a first crown height at a face-to-crown transition region in the forward crown area where the club face connects to the crown portion of the club head, a second crown height at a crown-to-skirt transition region where the crown portion connects to a skirt of the golf club head near a rear end of the golf club head, and a maximum crown height rearward of the first crown height and forward of the second crown height, and
• the maximum crown height is greater than both the first and second crown heights,
• wherein a portion of the club head body located below the geometric center of the ball striking surface is formed of a metallic material having a second material density greater than the first material density;
• wherein the golf club head has a center of gravity (CG) and a head origin located at the geometric center of the ball striking surface, a z-axis extends vertically through the head origin perpendicular to the ground when the club head is in the normal address position with an upward direction being positive, a y-axis extends horizontally from the head origin in a front-rear direction when the club head is in the normal address position with a rearward direction being positive, CGz is a vertical distance of the CG of the club head from the head origin along the z-axis, and CGy is a distance of the CG from the head origin along the y-axis;
• and
• wherein the CG of the golf club head is below the geometric center of the ball striking surface as measured along the z-axis of the golf club head.