A foldable walker having an arcuate front and rear leg frames pivotably connected by a hinge which permits the two leg frames to covert from an open configuration, with the front wheels engaging the ground and spaced a first distance from the rear wheels, to a folded configuration with the front wheels closer to the rear wheels. The walker includes a seat which can convert from a horizontal seat position to a vertical backrest position, and a height adjustable and pivotable foot rest.