Abstract: The invention relates to an impeller of a pump, in particular a blood pump, comprising a plurality of vanes, which have magnetically acting coupling elements disposed around an axis of rotation, wherein the impeller can in particular be caused to rotate in a contactless manner as a result of magnetic interaction between the coupling elements and a rotating magnetic field, wherein each of the vanes has at least two action regions, which are spaced apart from and flexibly connected to one another and on which forces can be exerted by means of a magnetic field, by which the relative position of the action regions with respect to one another can be changed. The invention also relates to a pump comprising a pump housing including an impeller of the described type comprising vanes.