A side panel (16) for sanitary articles wearable like pants includes a laminar body with two opposite surfaces having a proximal edge (160) for connection to the chassis (12) of the article (10) and a distal edge (161) bearing a closing element (20) of the article (10) itself. The closing element (20) has a closing formation (202) and it is unfoldable towards a use position, wherein the closing element (20) projects from the distal edge of the side panel (16), starting from a closed condition folded adjacent to the side panel (16). The closing element (20) is connected (204) to one of the surfaces of the side panel (16) and, in closed condition, it is folded against such surface of the side panel (16).
