A fan blade cover for use on fans having a plurality of fan blades, where one size cover fits many sizes and contours of fan blades. The cover includes a sleeve manufactured from a flexible material in a tubular configuration where one end of the sleeve is closed and an opposite end is open for mounting the cover on the fan blade. The open end of the sleeve includes a zipper for closing the open end to securely maintain the cover on the fan blade during fan operation. An alternate embodiment includes a clasp and drawstring to secure the fan blade cover in place.
