To combine headrests removed from a seat back and to arrange them in good order and in good style in a vehicle.

Stay receiving parts 3a and 3b for receiving and supporting headrest stays 2a, 2b, 2a' and 2b' of the other party at stay shaft ends are formed on the bottom part face of head-rest main bodies 1 and 1' and the headrest main bodies 1 and 1' are assembled by positioning the headrest stays 2a, 2b, 2a' and 2b' each other and combining them so as to be able to be stored and in addition, by attaching removably a net C on the back of a seat back B, the space between the net C and the seat back B is made to be a storing place for the headrest.