A n underwear- style worn article having a stomach-side section (21), a crotch section (13), a back- side section (23), and side-sealing sections (25) obtained b y joining the lateral edge sections (21 A , 2 IB) o f the stomach- side section (21) and the lateral edge sections (23A, Z ) o f the back side section (23), wherein: the stomach- side section (21) and the back- side section (23) have an exterior part ( 1 1) positioned thereon which i s obtained b y layering a first sheet material (33) and a second sheet material ( 1) the exterior part ( 1 1) i s stretchable in the widthwise direction the first sheet material (33) has a slit region (71) i n which a plurality o f slits (38) are arranged i n the head-to-foot direction and the slit region (71) has a sequence arranged with an interval interposed therebetween in the widthwise direction of the first sheet material (33).
