Abstract: A protective cover for a windshield wiper blade is provided. The cover may be secured on a windshield, or windscreen, in line with any windshield wipers adapted for use on a motor vehicle such as an automobile, watercraft, or even aircraft. The cover comprises a shell sized to envelop at least a blade portion of a windshield wiper when such wiper is not in use. The shell is defined, in part, by a rear flap that is hingedly engaged along a back edge of a base and releaseable from a closed position. In operation, an activated windshield wiper will automatically exit the shell to displace water and debris on the windshield by pressing the rear flap into an open position as it pivots across a windshield.