A developer feeding member for use with an electrophotographic image forming apparatus to feed a developer accommodated in a developer accommodating portion, includes a shaft for receiving a driving force to rotate when the shaft is mounted in the developer accommodating portion; a flexible sheet for feeding the developer accommodated in the developer accommodating portion when the flexible sheet is mounted in the developer accommodating portion; a mounting member for mounting the flexible sheet on the shaft such that the flexible sheet is movable relative to the shaft in a longitudinal direction, in a widthwise direction and in a thickness direction.