In a pull-on diaper, a first distance dimension between outer end portions of front and rear waist panels is in a range of 300 mm to 400 mm as measured on the diaper flatly developed after coupling of the front and rear waist panels in seam regions has been released. A second distance dimension between the waist elastic closest to an inner end portion of the front waist panel among waist elastics extending in the front waist panel across the respective seam regions in the front waist panel and the waist elastic closest to an inner end portion of the rear waist panel among waist elastics extending in the rear waist panel across the respective seam regions is at least 55% of the first distance dimension between outer end portions of the front and rear waist panels.
