A disposable hygiene article (100; 150; 200), comprising: a liquid-permeable topsheet, a liquid-impermeable backsheet and an absorbent core arranged between said topsheet and said backsheet, the absorbent core defining a longitudinal centre axis which extends substantially in the middle of the core in longitudinal direction of the article; flexible side flaps arranged on opposite sides of said absorbent core and provided for attaching said article to a garment; and liquid side barriers (122; 152) arranged substantially along longitudinal edges of said absorbent core and provided to reduce side-edge leakage; characterized in that said flexible side flaps each comprise a side portion of the backsheet and a side layer (114; 151) the side layer extending transversally from an inner longitudinal edge to an outer longitudinal edge, the inner longitudinal edge located between a longitudinal side edge of the topsheet and the longitudinal centre axis, and which is secured to said topsheet by means of a longitudinally extending seam, said seam partitioning said side layer (114; 151) in a first part (122; 152) and a second part (124; 154) with said first part (122; 152) extending transversally from said seam towards said longitudinal centre axis to the inner longitudinal edge and said second part (124; 154) extending transversally from said seam away from said longitudinal centre axis to the outer longitudinal edge, said first parts (122; 152) extending above said topsheet and being loose therefrom to form said liquid side barriers (122; 152), and the side layer and the side portion are attached to each other such that upon folding of said flexible side flaps, said side barriers (122; 152) are raised to a substantially upright position in use. a liquid-permeable topsheet, a liquid-impermeable backsheet and an absorbent core arranged between said topsheet and said backsheet, the absorbent core defining a longitudinal centre axis which extends substantially in the middle of the core in longitudinal direction of the article; flexible side flaps arranged on opposite sides of said absorbent core and provided for attaching said article to a garment; and liquid side barriers (122; 152) arranged substantially along longitudinal edges of said absorbent core and provided to reduce side-edge leakage; characterized in that said flexible side flaps each comprise a side portion of the backsheet and a side layer (114; 151) the side layer extending transversally from an inner longitudinal edge to an outer longitudinal edge, the inner longitudinal edge located between a longitudinal side edge of the topsheet and the longitudinal centre axis, and which is secured to said topsheet by means of a longitudinally extending seam, said seam partitioning said side layer (114; 151) in a first part (122; 152) and a second part (124; 154) with said first part (122; 152) extending transversally from said seam towards said longitudinal centre axis to the inner longitudinal edge and said second part (124; 154) extending transversally from said seam away from said longitudinal centre axis to the outer longitudinal edge, said first parts (122; 152) extending above said topsheet and being loose therefrom to form said liquid side barriers (122; 152), and the side layer and the side portion are attached to each other such that upon folding of said flexible side flaps, said side barriers (122; 152) are raised to a substantially upright position in use.