Provided is a self-fitting and automatically adjustable footwear wherein the shoe upper and/or shoe tongue have or are attached to a shape memory material (‘SMM”). Upon stimulation, the SMM deforms and brings the footwear to self-assemble about a foot, which further brings two clasp members close to each other and facilitates the clasp thereof to form a self-assembled and closed footwear. The clasp members may be integrated with straps or shoelaces, and optionally SMM. The footwear may include a motor, a control unit, and sensors which enable a motor-actuated fine tensioning of the footwear. A push button to enable manual opening of the footwear may be affixed on the footwear or removably attached to multiple surfaces/locations. The entire assembly generates data transmittable to health care providers and other data trackers. The footwear may include a battery, which may be charged by placing the footwear on a charge dock station.