Steampunk gas mask, Leather mask, Steampunk mask, Motorcycle Leather Mask, Biker Mask, Filter mask, Halloween costume Masks are made of genuine Italian vegetable tanned leather, hand dyed and sewed. Leather has hydrophobic treatment and it will retain its shape for a very long time. This mask will make a great addition to your costume and will make you look stylish at a themed party. This mask comes with two metal filters, two hose connectors.