A wearing article having a front waist region that is provided along a pair of opposite side edges with first fastening members, and a rear waist region provided along a pair of opposite side edges with second fastening members for engaging the first fastening members. Each of the second fastening members is formed with an uneven structure having a plurality of crests extending in a transverse direction and spaced one from another in a longitudinal direction. When the uneven structure comes into contact with the first fastening member, the resulting engagement is extremely weak and the uneven structure can be easily disengaged from the first fastening member. The uneven structure may be unfolded in the longitudinal direction and put in close contact with the first fastening member to achieve firm engagement over an area as large as possible between the flattened uneven structure and the first fastening member.