Crutches; Crutch cushion covers, namely, fitted covers for underarm crutch pads; Crutch handle covers, namely, fitted covers for underarm crutch pads; Tips for crutches; Crutch sockets being structural parts for crutches; Walking aids for medical purposes; Walking aid in the form of a crutch with adjustable suspension for medical purposes; Mobility support apparatus, namely, walkers to aid in mobility