Patent ID: 8021244

Claim:
A golf club shaft being a tubular body, comprising a laminate of fiber reinforced resin layers, wherein each of the fiber reinforced resin layers comprises a matrix resin and a fiber; when a portion with a most minimum thickness in the entire shaft is defined as a thinnest part, the entire thinnest part exists in a range of a first position to a second position; the first position is a position where an axial distance from a tip of the shaft is 50% of a full length of the shaft; the second position is a position where the axial distance from the tip of the shaft is 75% of the full length of the shaft; and a flexural rigidity value EIc (N/m 2 ) of the shaft at a point which is 175 mm away from a rear end of the shaft is two times or greater and three times or less of a flexural rigidity value EIm (N/m 2 ) of the thinnest part and wherein there is no other portion of the shaft outside the range of the first portion to the second portion which has a thickness equal to or less then the most minimum thickness of the entire shaft.