noglider 

I love my buff! I'm the kind of person who tends to get hot easily, so fleecy polyester is no good. The Buff brand neck gaiter is a thin layer of merino wool. It's so thin that I thought it couldn't possibly keep me warm, but it does. Sometimes I just pull it over my head and leave it on my neck only. Sometimes I pull it back up over my jaw. When it's very cold, I pull it over my ears and jaw. I might cover my mouth with it if it's very cold. Combining the Buff and a skull cap effectively makes a balaclava for me. To make an adjustment between these three setups, I have to remove my helmet, make the adjustment, and then secure it with my helmet again. That's the only downside, but I rarely have to do it more than once on a ride.