Wiper rubber blade

Provided is a rubber blade (50) for an automotive wiper capable of autonomously pressing firmly and resting securely against a windshield surface by altering the structure of the rubber blade (50). The rubber blade (50) has a head portion (52) forming an upper portion of the rubber blade. The head portion (52) includes a pair of mounting slots (51) for mounting the rubber blade along a wiper frame (60). The pair of mounting slots (51) has a sectional offset angle (¸1), dependant on the disposition of the wiper frame. A central axis in a center between the pair of mounting slots (51) in a sectional view of the blade is offset by an angle (¸3) from a vertical axis (L1). A wiping portion forms a lower portion of the rubber blade (50) for contacting the windshield, and is disposed in the direction of the vertical axis (L1).