To provide a hanger capable of being folded at a narrowed part of a bottle in a side segment of a bottle neck and improve a durability against either a bending or a twisting while curving and forming the narrowed part.

This hanger 6 is constituted by a lateral wide connecting piece 51 integrally formed with a ring 3 at a lower circumference of a bottle neck part, and a finger hook 52 integrally molded at a free end of the connecting piece 51. The finger hook 52 can be folded up and down by a thin walled narrow part 53 at a location spaced apart from the ring 3 of the connecting piece 51. This part is reinforced through a flow orientation of the resin by the narrow part 53. The narrow part 53 is curved downward from the lower surface of the connecting piece 51 to cause its upper and lower surfaces to be formed in an arcuate shape. An upward bending margin is formed long.