I purchased this neck gaiter for use as cold weather face mask. While the fabric had high air flow, it was not all that warm. I think this style was meant for warm weather sun protection, especially fishing on open water? I used on a day it was 4 below zero with just a hint of wind. Didn't really do the job as far as keeping face warm. However, it was easy to breath thru. And, while it did eventually frost up over my mouth, it never cut the air flow to the point it was difficult to breathe as other, heavier masks have done.
Perhaps for cold weather jogging or cross country skiing or aerobic activities where high air-flow is paramount, this mask would work OK. But, for general warmth with low exertion activities on single digit or sub-zero days, would not recommend.