Many of us at Excel Sports Boulder have been discussing light neck gators and how popular they are in Europe. We like to use them any time the temperature drops below 50ºF. We can't say for sure if it is just an old wives' tale, but many feel keeping the neck and throat area warm helps to prevent illness.
This light and stretchy garment is quite versatile and can serve as a facemask, headband, ear warmer, head cover, balaclava, neck gator with many more configurations discovered all the time. In case you are wondering, Curve is one of many Boulder, Colorado based cycling companies just like Excel Sports.
Check out this for a fun video on different ways to configure the Pandana: