Abstract: A hand and finger exerciser comprising a parallel bar inner frame slidably supported for reciprocating movement within the plane of an outer frame to which one of the crossbars of the inner frame is anchored by a plurality of rubber bands. A sleeve rotatably mounted on the opposite parallel crossbar of the inner frame is adapted to be gripped by four fingers of the user's open hand whose palm and thumb engage the adjacent bar of the outer frame. The sleeve rotates as the user closes his hand and thus facilitates natural movements of the fingers for optimum therapeutic exercising of tendons and muscles of the hand and forearm. The uniformly transversely spaced rubber bands are looped over adjacent bars of the inner and outer frames and the ends of each band are looped over an anchor pin on the outer frame for easy removal or attachment by the user without special tools. The inner frame as well as the rubber bands and anchor pins are disposed inside the outer frame, thus resulting in a compact mechanism.