a necessity on Kessel, despite the many air factories and atmosphere generators, as the air is simply too thin and polluted to breathe for long periods without harm
A covering for the nose and lower face fitted with special attachments for breathing oxygen or a mixture of oxygen and other gases. The oxygen mask has provision for separating the expired breath from the incoming oxygen.
An oxygen mask provides a method to transfer breathing oxygen gas from a storage tank to the lungs. Oxygen masks may cover the nose and mouth (oral nasal mask ) or the entire face (full face mask). They may be made of plastic, silicone, or rubber.