Two-parts absorbent article

A pant absorbent article comprising a belt part and a crotch part, the belt part and the crotch part being detachable with each other by a primary fastening system for providing the absorbent article, the absorbent article having a longitudinal direction and a transverse direction,

• the belt part having a front belt and a back belt, the belt part having elasticity in the transverse direction and comprising a pair of side seams having a seam length LS, the front belt and the back belt each comprising a primary belt fastening means on a garment facing side, the primary belt fastening means forming part of the fastening system engageable with a primary crotch fastening means;
• the crotch part comprising a water permeable topsheet, a water impermeable backsheet, an absorbent core disposed between the topsheet and the backsheet, and the primary crotch fastening means disposed on the wearer facing side,
• wherein the primary belt fastening means and the primary crotch fastening means are fastened magnetically.