Golf club shaft

A golf club shaft comprising:

• a plurality of fiber reinforced resin layers;
• a tip end;
• and a butt end, wherein
• the fiber reinforced resin layers include one or more straight layers, a bias layer, and hoop layers,
• an entire length of the golf club shaft is denoted by L,
• the one or more straight layers include one or more full length straight layers each having a length of greater than or equal to 0.7L relative to the entire length L of the golf club shaft,
• the hoop layers include full length hoop layers each having a length of greater than or equal to 0.7L relative to the entire length L of the golf club shaft,
• the full length hoop layers include one inner full length hoop layer, and one outer full length hoop layer located outside the inner full length hoop layer,
• at least one of the one or more full length straight layers is disposed inside the outer full length hoop layer,
• when the inner full length hoop layer has a thickness denoted by T1 (mm), and the outer full length hoop layer has a thickness denoted by T2 (mm), T2/T1 is greater than 1 and less than 2,
• the outer full length hoop layer has a resin content smaller than a resin content of the inner full length hoop layer,
• the golf club shaft further includes:
• a vertical fracture portion in which a starting point of fracture is located in a vertical position in a crushing strength test in which the golf club shaft is compressed in a cross-sectional vertical direction;
• and a horizontal fracture portion in which the starting point of fracture is located in a horizontal position in the crushing strength test, and
• the vertical fracture portion and the horizontal fracture portion are present in a region in which both the outer full length hoop layer and the inner full length hoop layer are disposed.