An absorbent article having first and second waist edges (2, 4) and first and second side edges (6, 8), the front and rear waist edges (2, 4) of the absorbent article extending in a lateral direction of the absorbent article and the side edges (6, 8) extending in a longitudinal direction of the absorbent article, the absorbent article comprising a topsheet, a backsheet arrangement, an absorbent member being disposed between the topsheet and the backsheet arrangement, a first side flap extending from the first side edge in the lateral direction of the absorbent article and a second side flap extending from the second side edge in the lateral direction of the absorbent article the first and second side flaps (12, 13) being attachment flaps, and first and second leg elastic members (18, 19) extending in the longitudinal direction of the absorbent article along first and second side edges (20, 21) of the backsheet arrangement, wherein the first and second side flaps each has an inner end portion (12', 13') which is secured between the topsheet and the backsheet arrangement within first and second flap anchoring areas (22, 23) being arranged at the first waist edge, each flap anchoring area (22, 23) having a lateral extension in the lateral direction of the absorbent article between an inner edge and an outer edge of the flap anchoring area (22, 23) and having a longitudinal extension in the longitudinal direction of the absorbent article between a waist edge of the side flap (12, 13) and a corresponding leg edge of the side flap (12, 13), wherein the backsheet arrangement comprises first and second leg elastic anchoring portions (30, 31) extending along the side edges (6, 8) of the absorbent article, the first and second leg elastic anchoring portions (30, 31) comprising two layers of backsheet material (32, 33), the first and second leg elastic members (18, 19) being arranged between the two layers of backsheet material (32, 33), each leg elastic anchoring portion (30, 31) being fully or partly arranged laterally outward of the inner edge of the corresponding flap anchoring area (22, 23), the first and second leg elastic members (18, 19) terminating at a distance from the first waist edge, whereby first leg elastic free portions (35, 36) are arranged at the first waist edge. a topsheet, a backsheet arrangement, an absorbent member being disposed between the topsheet and the backsheet arrangement, a first side flap extending from the first side edge in the lateral direction of the absorbent article and a second side flap extending from the second side edge in the lateral direction of the absorbent article the first and second side flaps (12, 13) being attachment flaps, and first and second leg elastic members (18, 19) extending in the longitudinal direction of the absorbent article along first and second side edges (20, 21) of the backsheet arrangement, wherein the first and second side flaps each has an inner end portion (12', 13') which is secured between the topsheet and the backsheet arrangement within first and second flap anchoring areas (22, 23) being arranged at the first waist edge, each flap anchoring area (22, 23) having a lateral extension in the lateral direction of the absorbent article between an inner edge and an outer edge of the flap anchoring area (22, 23) and having a longitudinal extension in the longitudinal direction of the absorbent article between a waist edge of the side flap (12, 13) and a corresponding leg edge of the side flap (12, 13), wherein the backsheet arrangement comprises first and second leg elastic anchoring portions (30, 31) extending along the side edges (6, 8) of the absorbent article, the first and second leg elastic anchoring portions (30, 31) comprising two layers of backsheet material (32, 33), the first and second leg elastic members (18, 19) being arranged between the two layers of backsheet material (32, 33), each leg elastic anchoring portion (30, 31) being fully or partly arranged laterally outward of the inner edge of the corresponding flap anchoring area (22, 23), the first and second leg elastic members (18, 19) terminating at a distance from the first waist edge, whereby first leg elastic free portions (35, 36) are arranged at the first waist edge.