started wearing one for bike commuting because my face was too cold on brutal days. I eventually settled on one that covered the bridge of my nose but I had to cut a larger opening for my mouth. I wear safety glasses when it is very cold. this is fine except when I stop. the moisture from my eye sockets will fog them. so when I stop & there is no airflow, I have to take them off





when it is not brutal out I have another I like with most of the face open but still covers everything else.





when it is just "cold" I use use a variety of other head warming options, often changing them at 1/2 way points on joy rides, such as a thin beanie, or knit hat w/o brim or a simple thin hooded sweatshirt. funny how useful a thin sweathsirt can be. you can layer under it & you can flip the hood down periodically for cooling, or back up for chills