Your face can get cooked or frozen when you're on the hiking trail or the ski slope, respectively, but Icebreaker's Flexi Half Chute Neck Gaiter uses soft, breathable, and moisture-wicking merino wool to protect you in both scenarios. It can be worn as a headband, face cover, neck gaiter, or hat, so you'll always have just the protection you're looking for.
Merino wool blend
Breathable and moisture wicking
Q & A
Lightweight but it works
Familiarity: I've used it several times
I use this while riding my fatbike during the winter. It's not too bulky, and doesn't overheat my neck area. It's great to just take the chill off, while still allowing for the body to ventilate during physical exertion. I'm not sure if it would keep me warm in near 0 temps, if I weren't being active though.