Absorbent article

An absorbent article, comprising:

• a topsheet which is provided at a side coming into contact with a skin of a wearer;
• a backsheet which is provided at a side separated from the wearer;
• and an absorber which is provided between the topsheet and the backsheet,
• wherein both side portions in a widthwise direction of the absorber are folded,
• wherein the absorber comprises:
• a body unit having a constricted portion constricted inside in the widthwise direction when viewed from a plan view of the absorber;
• and
• a pair of extension units which extends from the body unit to the outside in the widthwise direction of the absorber in a state in which the both side portions have been unfolded,
• wherein the constricted portion is formed in a center region in a longitudinal direction of the absorber, and
• wherein the extension unit comprises:
• an inner region which is provided at the constricted portion and is continuous to the body unit;
• and
• an outer region which is continuous to the inner region and is positioned
• outside of the inner region in the widthwise direction of the absorber, and
• wherein the outer region is folded toward the inner region at a side of the topsheet, and a length of the inner region along the longitudinal direction of the absorber is shorter than a length of the outer region along the longitudinal direction.