Abstract: In an elongated rubber element for a wiper blade, including a base portion fixed to the wiper blade, a neck portion, and three lip portions in which a central lip is suspended from the base portion through the neck portion at a central portion of the underside of the base portion, while lateral lips are branched off from the central lip on lateral sides thereof so as to extend substantially parallel to the central lip, the lateral lips being smaller in length than the central lip, the improvement wherein the lateral lips are formed with respective cutouts in a longitudinal direction of the lateral lips at arbitrarily spaced intervals, the cutouts being open at respective bottom edges of the lateral lips. The above structure allows the rubber element to be readily held in uniform contact with a curvilinear windshield surface.