A cover for windshield wiper blades having an elongate body with a central collar and first and second elongate portions extending from the central collar. The first and second elongate portions having outer ends, and the central collar defining an interior passageway having a snap-fit tongue. A channel is disposed along each of the first and second elongate portions extending from the central collar towards the outer ends; and an end retainer or other securing mechanism is located at the outer ends. Also, windshield wiper blades incorporating such covers.