An absorbent article having a longitudinal direction corresponding to a front-rear direction of a wearer and a lateral direction orthogonal to the longitudinal direction, the absorbent article comprising: an absorbent assembly including an absorbent member; a pair of leak-proof cuffs extending in the longitudinal direction and provided on a skin-facing surface of the absorbent assembly while a gap is interposed therebetween; side sheets extending outward in the lateral direction from side edges along the longitudinal direction of the absorbent member; and a pair of leg cuffs provided outside the pair of leak-proof cuffs in the lateral direction and in regions corresponding to legs of a wearer; wherein each of the pair of leak-proof cuffs includes the side sheet, and has, in the lateral direction, a base end portion at which the side sheet is fixed to another member and a stand-up portion that is a portion of the side sheet and stands toward a wearer from the base end portion as a starting point; the stand-up portion is folded along a folding portion extending in the longitudinal direction and includes a first stand-up portion extending from the base end portion to the folding portion and a second stand-up portion extending from the folding portion to a free end of the stand-up portion and to be placed closer to the skin of a wearer than the first stand-up portion; in the second stand-up portion, a plurality of leak-proof-cuff-forming elastic members are arranged in the lateral direction in a stretchable state in the longitudinal direction; the leg cuff includes the side sheet and a plurality of leg-cuff-forming elastic members provided on the side sheet; the plurality of leg-cuff-forming elastic members are arranged in the lateral direction in a stretchable state in the longitudinal direction and located outside the base end portion in the lateral direction; a contractive force per one leak-proof-cuff-forming elastic member in the second stand-up portion at a cuff longitudinal length of 70 is smaller than a contractive force per one leg-cuff-forming elastic member in the leg cuff at a cuff longitudinal length of 70; and a contractive force of the whole second stand-up portion at a cuff longitudinal length of 70 is larger than a contractive force of the whole leg cuff at a cuff longitudinal length of 70; where the cuff longitudinal length is a length of each of the leak-proof cuff and the leg cuff in the longitudinal direction, and the cuff longitudinal length of the leak-proof cuff and the cuff longitudinal length of the leg cuff in a fully stretched state are each defined as 100; wherein the contractive force is measured as defined in the description. an absorbent assembly including an absorbent member; a pair of leak-proof cuffs extending in the longitudinal direction and provided on a skin-facing surface of the absorbent assembly while a gap is interposed therebetween; side sheets extending outward in the lateral direction from side edges along the longitudinal direction of the absorbent member; and a pair of leg cuffs provided outside the pair of leak-proof cuffs in the lateral direction and in regions corresponding to legs of a wearer; wherein each of the pair of leak-proof cuffs includes the side sheet, and has, in the lateral direction, a base end portion at which the side sheet is fixed to another member and a stand-up portion that is a portion of the side sheet and stands toward a wearer from the base end portion as a starting point; the stand-up portion is folded along a folding portion extending in the longitudinal direction and includes a first stand-up portion extending from the base end portion to the folding portion and a second stand-up portion extending from the folding portion to a free end of the stand-up portion and to be placed closer to the skin of a wearer than the first stand-up portion; in the second stand-up portion, a plurality of leak-proof-cuff-forming elastic members are arranged in the lateral direction in a stretchable state in the longitudinal direction; the leg cuff includes the side sheet and a plurality of leg-cuff-forming elastic members provided on the side sheet; the plurality of leg-cuff-forming elastic members are arranged in the lateral direction in a stretchable state in the longitudinal direction and located outside the base end portion in the lateral direction; a contractive force per one leak-proof-cuff-forming elastic member in the second stand-up portion at a cuff longitudinal length of 70 is smaller than a contractive force per one leg-cuff-forming elastic member in the leg cuff at a cuff longitudinal length of 70; and a contractive force of the whole second stand-up portion at a cuff longitudinal length of 70 is larger than a contractive force of the whole leg cuff at a cuff longitudinal length of 70; where the cuff longitudinal length is a length of each of the leak-proof cuff and the leg cuff in the longitudinal direction, and the cuff longitudinal length of the leak-proof cuff and the cuff longitudinal length of the leg cuff in a fully stretched state are each defined as 100;