System for forming an absorbent article of pad type or all-in-one type attachable around the waist of a user, the system comprising: a chassis having a front portion and a back portion and a longitudinal extension along a longitudinal axis from a front end of the front portion towards a back end of the back portion, the chassis further comprising a crotch portion connecting the front portion to the back portion, the front portion having left and right front side edges (14a, 14b), the back portion having left and right back side edges (15a, 15b), the chassis further comprising, a liquid permeable top sheet, and a liquid impermeable back sheet, wherein an absorbent core is arranged between the top sheet and the back sheet, characterized in that: the system being arranged such that the chassis forms a pad type absorbent article, the system further comprises at least one first add-on means (30, 32) adapted to be attached with a first end to the chassis such that the first add-on means extend substantially transversal to the longitudinal axis of the chassis, to enable formation of an absorbent article of all-in-one type that is attachable around the waist of a user; there is a distance from a front end of the absorbent core to the front end of the chassis that is more than 5 cm; there is a distance from a back end of the absorbent core to the back end of the chassis that is at least 5 cm; there is a distance from a front side edge of the absorbent core to the front side edge (14a, 14b) of the chassis that is at least 5 cm; and there is a distance from a back side edge the absorbent core to the back side edge (15a, 15b) of the chassis that is at least 5 cm. a chassis having a front portion and a back portion and a longitudinal extension along a longitudinal axis from a front end of the front portion towards a back end of the back portion, the chassis further comprising a crotch portion connecting the front portion to the back portion, the front portion having left and right front side edges (14a, 14b), the back portion having left and right back side edges (15a, 15b), the chassis further comprising, a liquid permeable top sheet, and a liquid impermeable back sheet, wherein an absorbent core is arranged between the top sheet and the back sheet, the system being arranged such that the chassis forms a pad type absorbent article, the system further comprises at least one first add-on means (30, 32) adapted to be attached with a first end to the chassis such that the first add-on means extend substantially transversal to the longitudinal axis of the chassis, to enable formation of an absorbent article of all-in-one type that is attachable around the waist of a user; there is a distance from a front end of the absorbent core to the front end of the chassis that is more than 5 cm; there is a distance from a back end of the absorbent core to the back end of the chassis that is at least 5 cm; there is a distance from a front side edge of the absorbent core to the front side edge (14a, 14b) of the chassis that is at least 5 cm; and there is a distance from a back side edge the absorbent core to the back side edge (15a, 15b) of the chassis that is at least 5 cm.