Golf club head with variable center of gravity

A golf club head comprising:

• a striking face portion located at a frontal portion of said golf club head;
• a backing portion located behind said striking face portion;
• and
• a sole muscle portion located at a bottom of said golf club head between said striking face portion and said backing portion, wherein said sole muscle portion further comprises only one of a cavity having an opening and one or more weights shaped to at least partially fit in said cavity, wherein said opening of said cavity is opened towards a bottom sole portion of said sole muscle portion, and wherein said golf club head has a center of gravity greater than about 28 mm from an intersection point between a hosel bore axis and a ground plane along an x-axis.

A golf club head comprising:

• a striking face portion located at a frontal portion of said golf club head;
• a backing portion located behind said striking face portion;
• a sole muscle portion located at a bottom of said golf club head between said striking face portion and said backing portion, only one of a weight pocket located at an upper toe portion of said backing portion of said golf club head, and
• a weight pad, located congruently within said weight pocket,
• wherein said wedge type golf club head has a center of gravity greater than about 28 mm from an intersection point between a hosel bore axis and a ground plane along an x-axis.