Golf club head

1. A wood-type golf club head comprising:

a crown, a sole and a front wall having a perimeter;

a heel wall extending 2.0 inches to 5.0 inches rearward from the perimeter of the front wall;

an aft wall substantially perpendicular to the heel wall, the aft wall extending from 2.5 inches to 5.5 inches from an aft edge of the heel wall; and

a toe wall substantially perpendicular to the aft wall, the toe wall extending from 2.0 inches to 5.0 inches from an aft edge of the toe wall; wherein the crown, the sole, the front wall, the heel wall, the aft wall and the toe wall define a hollow interior;

wherein the golf club head has a volume ranging from 420 cubic centimeters to 470 cubic centimeters, a coefficient of restitution ranging from 0.825 to 0.883, and a moment of inertia, Izz, about the center of gravity of the golf club head greater than 4000 grams-centimeters squared.

2. The wood-type golf club head according to claim 1 wherein the heel wall, the aft wall and the toe wall each have the same height.

3. The wood-type golf club head according to claim 2 wherein the heel wall, the aft wall and the toe wall each have a height ranging from 1.5 inches to 3.0 inches.

4. A wood-type golf club head comprising:

a body having a face, a crown, a sole, a heel wall, an aft wall, and a toe wall, the body having a hollow interior;

wherein the body has a volume ranging from 350 cubic centimeters to 500 cubic centimeters;

wherein each of the rear wall, the toe wall and the heel wall is substantially straight;

wherein the golf club head has a coefficient of restitution ranging from 0.825 to 0.883, amass ranging from 180 grams to 215 grams, a moment of inertia, Izz, about the center of gravity of the golf club head greater than 4000 grams-centimeters squared, and a moment of inertia, Iyy, about the center of gravity of the golf club head ranging from 2000 grams-centimeters squared to 4000 grams-centimeters squared.

5. The wood-type golf club head according to claim 4 wherein the body has a geometric center point, an aft-heel edge point and an aft-toe edge point, wherein the distance from the geometric center point to the aft-heel edge point is equal to the distance from the geometric center point to the aft-toe edge point.

6. The wood-type golf club head according to claim 5 further comprising an aft-heel curvature section between the aft wall and the heel wall, and an aft-toe curvature section between the aft wall and the toe wall.

7. The wood-type golf club head according to claim 6 wherein each of the aft-heel curvature section and the aft-toe curvature section has a curvature length ranging from 0.5 inch to 1.0 inch.

8. The wood-type golf club head according to claim 4 wherein the heel wall extends rearward from a perimeter of the front wall a distance of least 50% of the length of the heel wall at an angle of 80 degrees to 90 degrees relative to relative to a plane parallel to the farthest extent of the face.

9. The wood-type golf club head according to claim 4 wherein the heel wall extends rearward from a perimeter of the front wall a distance of least 66% of the length of the heel wall at an angle of 80 degrees to 90 degrees relative to a plane parallel to the farthest extent of the face.

10. The wood-type golf club head according to claim 4 wherein the heel wall extends rearward from a perimeter of the front wall a distance of least 75% of the length of the heel wall at an angle of 80 degrees to 90 degrees relative to a plane parallel to the farthest extent of the face.

11. The wood-type golf club head according to claim 4 wherein the heel wall extends rearward from a perimeter of the front wall a distance of least 90% of the length of the heel wall at an angle of 80 degrees to 90 degrees relative to a plane parallel to the farthest extent of the face.

12. The wood-type golf club head according to claim 4 wherein the heel wall extends rearward from a perimeter of the front wall a distance of least 95% of the length of the heel wall at an angle of 70 degrees to 90 degrees relative to a plane parallel to the farthest extent of the face.

13. The wood-type golf club head according to claim 4 wherein the distance from the geometric center point to the aft-heel edge point and the distance from the geometric center point to the aft-toe edge point are the greatest length of the geometric center point to a location on the golf club head.

14. A golf club head comprising:

a face component composed of a first material, the face component comprising a striking plate portion and a return portion, the return portion extending a distance ranging from 0.25 inch to 1.5 inches from a perimeter of the striking plate portion; and

a substantially square aft-body coupled to the return portion of the face component, the aft-body composed of a second material having a density less than that of the first material, the aft-body comprising a crown portion, a sole portion, the sole portion having a bottom section and a ribbon section, the ribbon section being located between the crown portion and the bottom section of the sole portion;

wherein the golf club head is substantially square;

wherein the golf club head has a coefficient of restitution ranging from 0.825 to 0.883, a mass ranging from 180 grams to 215 grams, a volume ranging from 420 cubic centimeters to 470 cubic centimeters, a moment of inertia, Izz, about the center of gravity of the golf club head greater than 4000 grams-centimeters squared, and a moment of inertia, Iyy, about the center of gravity of the golf club head ranging from 2000 grams-centimeters squared to 4000 grams-centimeters squared.

15. A wood-type golf club head comprising:

a substantially square body comprising a crown, a sole, a ribbon and a striking plate, the striking plate having a face area ranging from 7.0 square inches to 9.0 square inches;

wherein the golf club head has a volume less than 460 cubic centimeters, a coefficient of restitution ranging from 0.825 to 0.883, a mass ranging from 190 grams to 225 grams, a moment of inertia about the Izz axis through the center of gravity of the golf club head ranging from 4000 grams-centimeters squared to 5000 grams-centimeters squared, and a moment of inertia about the Ixx axis through the center of gravity of the golf club head greater than 3000 grams-centimeters squared.

16. A wood-type golf club head comprising:

a face component composed of a first material, the face component comprising a striking plate portion and a return portion, the return portion extending rearward from a perimeter of the striking plate portion, the return portion comprising a heel lateral section and a toe lateral section; and

an aft-body coupled to the return portion of the face component, the aft-body composed of a second material having a density less than that of the first material, the aft-body comprising a crown portion, a sole portion, the sole portion having a bottom section and a ribbon section, wherein the bottom section of the sole portion has a first keel point, an inward curvature and a second keel point;

wherein the heel lateral section of the return portion and a heel end of the ribbon section of the sole portion of the aft-body define a heel wall of the golf club head and the toe lateral section of the return portion and a toe end of the ribbon section of the sole portion of the aft-body define a toe wall of the golf club head, the heel wall extends rearward from a perimeter of the striking plate portion a distance of least 90% of the length of the heel wall at an angle of 80 degrees to 90 degrees relative to a plane parallel to the farthest extent of the strike plate portion, and the toe wall is substantially parallel to the heel wall; and

wherein the golf club head has a volume less than 460 cubic centimeters, a coefficient of restitution ranging from 0.825 to 0.883, a mass ranging from 190 grams to 225 grams, a moment of inertia about the Izz axis through the center of gravity of the golf club head greater than 4000 grams-centimeters squared, and a moment of inertia about the Ixx axis through the center of gravity of the golf club head greater than 3000 grams-centimeters squared.

17. A wood-type golf club head comprising:

a front wall having a perimeter;

a heel wall extending rearward from the perimeter of the front wall a distance of least 66% of the length of the heel wall at an angle of 80 degrees to 90 degrees relative to a plane parallel to the farthest extent of the front wall;

an aft wall extending from 2.5 inches to 4.5 inches from an aft edge of the heel wall; and

a toe wall extending rearward from the perimeter of the front wall a distance of least 66% of the length of the toe wall at an angle of 80 degrees to 90 degrees relative to a plane parallel to the farthest extent of the front wall;

wherein the golf club head has a volume ranging from 420 cubic centimeters to 470 cubic centimeters, a coefficient of restitution ranging from 0.825 to 0.883, a moment of inertia, Izz, about the center of gravity of the golf club head greater than 4000 grams-centimeters squared, a moment of inertia, Ixx, about the center of gravity of the golf club head ranging from 2500 grams-centimeters squared to 3750 grams-centimeters squared and a moment of inertia. Iyy, about the center of gravity of the golf club head ranging from 2000 grams-centimeters squared to 4000 grams-centimeters squared.