Originally Posted by
scroca
When it is extrememly cold I use one to supplement my balaclava. Most of the year it is too warm to use it.
That's what I do as well. Below 25-20 degrees and I'll start wearing the balaclava. Below zero and I'll add the neck gaiter.
I'll also use the neck gaiter alone up around my ears when it's between 40 and 25 degrees.