Use this out in the winter during negative weather. It's remarkable how this changes your days experience completely. As long as it's not heavy snowfall that'll drag it down or raining that will freeze and weigh it down, it is wonderful. It will keep your lips from getting frostbit exposed to the dry air. I'll even wear this up to 35degree's.

my only issues is that there is only one sew so the thing will constantly roll. It has a hard time staying up. Sometimes it's a bit much and hard to breathe through. It doesn't expand toward your shoulders so it can pop out of your shirts if you move your head up or sideways. if its under a lot of layers it'll feel constricting.