Manual wheel chairs for use by disabled and infirm persons; wheel chair accessories for manual wheel chairs, namely, transit seat belts and safety harnesses, foot rest plates, wheel locks, sunshades, grab bars and rain covers for manual wheel chairs; adjustable and customizable occupant support, positioning and seating products for manual wheel chairs, namely, back rests and back supports, lateral trunk supports, seat cushions, lateral and pelvic thigh supports, abductor and medial knee blocks, seat and back positioning wedges, ankle supports, trunk and pelvic positioning supports and seat belts, headrests, head supports, arm rests, positioning trays, and mounting hardware therefor, all for manual wheel chairs; structural wheel chair repair parts and replacement parts for manual wheel chairs