Golf club head

Abstract

A hollow golf club head has a head volume of not less than 430 cc, a lateral moment of inertia of from 5000 to 5900 g sq·cm, and a club head thickness of from 45 to 58 mm. In a vertical plane including a sweet spot and the center of gravity of the head, preferably, a crown surface length measured along the upper outer surface of the club head from an upper edge of a club face to the rearmost point of the club head is set in a range of from 1.02 to 1.20 times a sole surface length measured along the lower outer surface of the club head from a lower edge of the club face to the rearmost point of the club head.

1 . A hollow golf club head having a head volume of not less than 430 cc, a lateral moment of inertia of from 5000 to 5900 g sq·cm, and a club head thickness of from 45 to 58 mm. 
   
   
       2 . The head according to  claim 1 , wherein
 in a vertical plane including a sweet spot and the center of gravity of the head, a crown surface length measured along the upper outer surface of the club head from an upper edge of a club face to the rearmost point of the club head is more than a sole surface length measured along the lower outer surface of the club head from a lower edge of the club face to the rearmost point of the club head.   
   
   
       3 . The head according to  claim 1 , wherein
 in a vertical plane including a sweet spot and the center of gravity of the head, a crown surface length measured along the upper outer surface of the club head from an upper edge of a club face to the rearmost point of the club head is in a range of from 1.02 to 1.20 times a sole surface length measured along the lower outer surface of the club head from a lower edge of the club face to the rearmost point of the club head.