A facial and/or body prosthesis or appliance is disclosed. The material formed into the final prosthesis is a specific material uniquely adapted for the purpose. The material is a closed-cell, cross-linked, polyethylene and is in sheet form having a thickness in the range of from 1/64 inch to 1/4 inch...http://www.google.fr/patents/US4920580?utm_source=gb-gplus-shareBrevet US4920580 - Face mask and body prosthesis