Craftster member teriyakimoto made this knitted gas mask for a friend who thought it would be a cool way to stay warm while riding his bike in winter. It is attached to his knit cap by Velcro straps. Link -via Unique Daily
If you wear glasses, the typical ski mask knocks your breath back through your eyeholes, fogging your glasses. This 'gas mask' design could actually be more practical for people wearing glasses, the 'feed bag/ air filter' nose portion would allow the force of ones breath to dissapate rather than being forced out through the eyeholes, and ones glasses would not get fogged.
That is, it could catch on.
Anyone? Anyone?
Just don't ride your bike in the winter. Problem solved.