Golf club head

A golf club head comprising:

• a body comprising a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion, and a skirt positioned around a periphery between the sole and the crown, wherein at least a portion of the sole or a portion of the crown is formed of a composite material, wherein the body has a forward portion and a rearward portion;
• and
• a face positioned at the forward portion of the body, the face having an ideal impact location, wherein a face plane is defined to extend tangential to the ideal impact location;
• wherein the body extends a distance L transversely away from the face plane and defines cross-sectional areas A along planes parallel to the face plane and spaced rearward from the face plane by a distance q, wherein a body region is defined between a dimension of q/L of 0.10 to a dimension of q/L of 1, and wherein within the body region at least about 50% of the cross-sectional areas A are between an upper cross-sectional area limit Au and a lower cross-sectional area limit Al, where
• Au=5512(q/L)2−14026(q/L)+8875+1200(q/L)+500, and (1)
• Al=5512(q/L)2−14026(q/L)+8875−2000[1−(q/L)]2−300;
• (2)
• wherein the golf club head has a head origin defined as a position on the face plane at a geometric center of the face, the head origin including an x-axis tangential to the face and generally parallel to the ground when the head is ideally positioned where a positive x-axis extends towards the heel portion, a y-axis extending perpendicular to the x-axis and generally parallel to the ground when the head is ideally positioned where a positive y-axis extends from the face and through the rearward portion of the body, and a z-axis extending perpendicular to the ground, to the x-axis and to the y-axis when the head is ideally positioned where a positive z-axis extends from the origin and generally upward,
• wherein the golf club head has a center of gravity with:
• an x-axis coordinate between approximately −5 mm and approximately 10 mm,
• a y-axis coordinate between approximately 20 mm and approximately 50 mm, and
• a z-axis coordinate between approximately −10 mm and approximately 5 mm.

A golf club head comprising:

• a body comprising a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion, and a skirt positioned around a periphery between the sole and the crown, wherein at least a portion of the sole or a portion of the crown is formed of a composite material, wherein the body has a forward portion and a rearward portion;
• and
• a face positioned at the forward portion of the body, the face having an ideal impact location, wherein a face plane is defined to extend tangential to the ideal impact location;
• wherein the body extends a distance L transversely away from the face plane and defines cross-sectional areas A along planes parallel to the face plane and spaced rearward from the face plane by a distance q, wherein a body region is defined between a dimension of q/L of 0.10 to a dimension of q/L of 0.95, and wherein within the body region at least about 50% of the cross-sectional areas A are between an upper cross-sectional area limit Au and a lower cross-sectional area limit Al, where
• Au=5512(q/L)2−14026(q/L)+8875+1200(q/L)+500, and (1)
• Al=5512(q/L)2−14026(q/L)+8875−2000[1−(q/L)]2−300;
• (2)
• wherein the golf club head has a head origin defined as a position on the face plane at a geometric center of the face, the head origin including an x-axis tangential to the face and generally parallel to the ground when the head is ideally positioned where a positive x-axis extends towards the heel portion, a y-axis extending perpendicular to the x-axis and generally parallel to the ground when the head is ideally positioned where a positive y-axis extends from the face and through the rearward portion of the body, and a z-axis extending perpendicular to the ground, to the x-axis and to the y-axis when the head is ideally positioned where a positive z-axis extends from the origin and generally upward, and
• wherein the golf club head has a center of gravity with:
• an x-axis coordinate between approximately −5 mm and approximately 10 mm,
• a y-axis coordinate between approximately 20 mm and approximately 50 mm, and
• a z-axis coordinate between approximately −10 mm and approximately 5 mm.