A smoke-proof headgear has a headgear body. The headgear body is made of aluminumized oxide fiber cloth. A window is seamed to a predetermined position through a connecting fire-proof wire. The lower side of the window has a filtering piece of a gauze mask and a neck tighter is placed at the inner side...http://www.google.es/patents/US6463589?utm_source=gb-gplus-sharePatente US6463589 - Smoke-proof headgear
