A removable headrest device for seats with headrest. The device includes two boards that are joined by an elastic and an non-elastic band that embrace the headrest of the seat, and extend forward a sufficient distance to serve as a support for a user. Velcro pads are used to cooperatively tighten the non-elastic band in order to keep the removable headrest device firmly in place. Advertising or promotional or any other graphic material can be placed in the free areas of the boards. Optimally, protective covers with advertising material are removably inserted on the distal ends of the boards.