The resistance against the portion of a band body that is riding over engagement claws at the time of fastening the band body is reduced, so that the band body can be fastened by a small amount of fastening force. This boot band consists of: a band body that is fastened by winding in a ring shape an outer overlapping portion and an inner overlapped portion around a member to be fastened; engagement claws and that are formed on the outer overlapping portion; engagement holes that are formed in the inner overlapped portion and that engage with the engagement claws, so as to maintain the band body in a fastened condition; a lip that is formed by separating, along the fastening direction of the band body, the area of the inner overlapped portion where an engagement hole is formed from that area's surrounding area, and with the fastening-direction end of the lip formed as a free end; and a slit, which the lip penetrates through to the opposite side of the slit.