Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials, latex or plastics or containing cork including such goods being blanks for use in the manufacture of arch supports, shells, inserts, insoles, footbeds, outer soles and midsoles for orthopaedic and non-orthopaedic footwear and for sport shoes (semi finished) and not included in other classes; plastics in extruded form for use in manufacture or as foam to take the cast of a foot; packing, stopping and insulating materials; flexible pipes, not of metal