To provide a label, with which an aimed page can be opened quickly, in addition which has a small portion jutted out of a book or the like and a favorable appearance and further is hard to fall off.

In this label, a separable and rebondable pressure-sensitive adhesive layer 1a is provided on the rear surface in one end side of the main body 1 of the label and, at the same time, a thicker part 2 is provided in the other end side of the main body 1 of the label. Further, in this label, a core material 5 is inserted in the thicker part 2 and the written contents of a book 4 or the like are made to be seen through from above the stuck main body 1 of the transparentized label and further the pressure-sensitive adhesive layer 1a is provided over nearly the whole rear surface of the main body 1 of the label.