Golf club head having a bridge member

1. A golf club head comprising:

a heel;

a toe;

a top portion;

a sole portion;

a striking face extending from the top portion to the sole portion, the striking face providing a contact area for engaging a golf ball;

a rear face opposite the striking face, the rear face defining a first rear cavity;

a removable bridge member extending across the first rear cavity, the removable bridge member including a curved upper edge and curved lower edge; and

a wall extending from the sole portion to the removable bridge member, the wall forming a second rear cavity, the second rear cavity and the removable bridge member varying a center of gravity of the golf club head with respect to the striking face;

wherein the removable bridge member comprises a first height dimension in an area adjacent the heel, a second height dimension in an area adjacent the toe, and a third height dimension between the heel and toe, the third height dimension being less than the first height dimension and the second height dimension.

2. The golf club head of claim 1 , wherein the golf club head further comprises a space between the wall and the rear face.

3. The golf club head of claim 1 , wherein the removable bridge member connects the heel and toe.

4. The golf club head of claim 3 , wherein removable bridge member is connected to the heel and toe with screws.

5. The golf club head of claim 4 , wherein removable bridge member comprises an interchangeable bridge member.

6. The golf club head of claim 1 , wherein the curved upper edge of the removable bridge member is in a direction opposite the curved lower edge.

7. The golf club head of claim 1 , wherein the wall comprises a front surface, a back surface opposite the front surface, a top surface, and a bottom surface, the bottom surface opposite the top surface.

8. The golf club head of claim 1 , wherein the removable bridge member comprises a substantially uniform thickness.

9. A golf club head comprising:

a heel;

a toe;

a top portion;

a sole portion;

a striking face extending from the top portion to the sole portion, the striking face providing a contact area for engaging a golf ball;

a rear face opposite the striking face, the rear face defining a first rear cavity;

a removable bridge member extending across the first rear cavity, the removable bridge member including a curved upper edge and curved lower edge; and

a wall extending from the sole portion to the removable bridge member, the wall forming a second rear cavity, the second rear cavity and the removable bridge member varying a center of gravity of the golf club head with respect to the striking face;

wherein the curved upper edge and curved lower edge of the removable bridge member comprise a concavely curved upper edge and concavely curved lower edge.

10. A golf club head comprising:

a heel;

a toe;

a top portion;

a sole portion;

a striking face extending from the top portion to the sole portion, the striking face providing a contact area for engaging a golf ball;

a rear face opposite the striking face, the rear face defining a first rear cavity;

a removable bridge member extending across the first rear cavity, the removable bridge member including a curved upper edge and curved lower edge; and

a wall extending from the sole portion to the removable bridge member, the wall comprising a front surface, a back surface opposite the front surface, a top surface, and a bottom surface, the bottom surface opposite the top surface, the wall forming a second rear cavity, the second rear cavity and the removable bridge member varying a center of gravity of the golf club head with respect to the striking face;

wherein the front surface is secured to the removable bridge member using an adhesive.