[Velvet]

Yes, to prevent moisture escaping our mouths while breathing, talking or singing, if one is exercising near people. Studies show the louder noise we make from our mouths the further the droplets go. The mask also protects you from someone suddenly sneezing etc as you go by. And respiratory microdroplets can stay in the air for up to several hours. I wear my full face helmet while riding myself. At home on the treadmill I don’t wear a mask.