A vehicle seat assembly is provided having a inflatable bag positioned within its seat cushion. The bag comprises first and second fabric members joined by a rib fabric member. Each first and second member is a laminate consisting of a meshed middle fabric sandwiched between two thermoplastic resin layers...http://www.google.co.uk/patents/US4965899?utm_source=gb-gplus-sharePatent US4965899 - Air cushion for chair and chair utilizing the air cushion
