Slide fastener coupled to flexible member includes: a pair of fastener stringers, each of the fastener stringers having a fastener tape provided with a first side-edge portion and a second side-edge portion which extend in an elongation direction of the fastener tape, and a fastener element provided on the first side-edge portion side; and one or more sliders for opening and closing the pair of fastener stringers. The fastener tape includes a first tape region onto which a flap of the flexible member is overlaid and a second tape region positioned between the first tape region and the second side-edge portion. The flap is interposed between the first tape region and the second tape region.