A golf club 2 includes a shaft 6 having a tip end Tp and a butt end Bt, a head 4 and a grip 8 . The shaft 6 includes a plurality of carbon fiber reinforced layers. The layers include a straight layer, a bias layer and a hoop layer. When a weight of the hoop layer is defined as WF, and a shaft weight is defined as WS, WF/WS is 0.18 or greater. The shaft weight WS is 42 g or less. In the shaft 6 , a point 200 mm distant from the butt end Bt is defined as P1, and a region between the point P1 and the butt end Bt is defined as a specific butt region Rb. A weight of the hoop layer in the specific butt region Rb is defined as WFb, and a shaft weight in the specific butt region Rb is defined as WSb.
1. A golf club comprising a shaft having a tip end and a butt end, a head, and a grip, wherein
the shaft has a plurality of carbon fiber reinforced layers,
the carbon fiber reinforced layers include a straight layer, a bias layer, and a hoop layer,
when the hoop layer has a weight that is defined as WF, and the shaft has a shaft weight that is defined as WS, WF/WS is equal to or greater than 0.18,
the shaft weight WS is equal to or less than 42 g.
2. The golf club according to claim 1 , wherein
in the shaft, a point 200 mm distant from the butt end is defined as P1, and a region from the point P1 to the butt end is defined as a specific butt region,
a weight of the hoop layer in the specific butt region is defined as WFb,
a shaft weight in the specific butt region is defined as WSb, and
WFb/WSb is equal to or greater than 0.30.
3. The golf club according to claim 2 , wherein the specific butt region includes the hoop layer which comprises three or more plies.
4. The golf club according to claim 1 , wherein an inner diameter of the shaft at the point P1 is equal to or greater than 14.0 mm.
5. The golf club according to claim 1 , wherein when a weight of the straight layer is defined as WT, WF/WT is equal to or greater than 0.25.
6. The golf club according to claim 1 , wherein in the shaft,
an EI value at a point 830 mm distant from the tip end is defined as E8, an EI value at a point 930 mm distant from the tip end is defined as E9, and an EI value at a point 1030 mm distant from the tip end is defined as E10, and
in a graph obtained by plotting the three EI values E8, E9 and E10 on an x-y coordinate plane in which an x axis represents a distance (mm) from the tip end to a measurement point and a y axis represents the EI value (kgfm 2 ), a gradient of a linear expression obtained by approximating the three plotted points with a least-square method is defined as M3, and
the gradient M3 is equal to or less than 0.0100.
7. The golf club according to claim 1 , wherein in the shaft, an EI value at a point 1030 mm distant from the tip end is defined as E10, E10 is equal to or less than 5.0 (kgfm 2 ).
8. The golf club according to claim 1 , wherein when a distance between the tip end of the shaft and a center of gravity of the shaft is defined as Lg, and a length of the shaft is defined as Ls, Lg/Ls is equal to or greater than 0.50.