My husband and I love to ride our Mountain Bikes. We ride every chance that we get and when the weather turns chilly, we don't want to stop until there's snow and ice on the ground. Living in Maine, the weather can get pretty chilly and my cheekbones are especially sensitive to the cold. My face hurts so bad that after a few minutes, I'll get a terrible headache. My husband's face isn't affected as much but his head does get cold after awhile so we both needed something to keep our heads warm.  We weren't entirely sure that this Balaclava would work because it's so thin but there's not a lot of room under a bike helmet so we figured we'd give it a try. It's perfect for the fall/early winter chill!  It keeps our heads warm and when my cheekbones get too cold, it covers them and warms them up. I wear glasses and my only issue is that when I pull the part over my face, it redirects my breath toward my glasses. The colder it is outside, the foggier my glasses get. That isn't an issue I would fault the  Balaclava with though. We're very happy with our purchase and would highly recommend.