A cover nonwoven fabric covers a back surface of an inner member from between a front side outer member and the inner member to between a back side outer member and the inner member. The cover nonwoven fabric extends from a back surface side of a base portion of one side gather to a back surface side of a base portion of the other side gather. The cover nonwoven fabric has holes penetrating the front and back surfaces at intervals from between the front side outer and inner members to between the back side outer and inner members. The side edges of the cover nonwoven fabric are located at the positions same as the side edges of the narrowest part of the absorber in the width direction or on the center side in the width direction with respect to the side edges of the narrowest part.
