Crutches; Apparatus for physical training for medical use; Crutches and tips therefor; Ear plugs for noise reduction; Fitted covers for underarm crutch pads; Hair prostheses; Hearing aids; Massage apparatus; Walkers for use by mobility-impaired individuals; Walkers to aid in mobility; Walking aids for disabled persons, namely, walking frames; Walking aids for medical purposes; Walking frames for disabled persons; Walking sticks for medical purposes; Wheeled walkers to aid mobility