This hat is awesome. I have used it for several weeks now biking in below freezing weather and it stops wind dead in its tracks and breathes like a fat kid on a stairmaster. Fits comfortably under my helmet. I use it by itself for below-freezing aerobic activity and I wear a liner underneath for base camp. When it arrived it was not as soft as it looked in the pics but after a few wears and one wash it's as comfy as a baby blanket. It seems to be very durable and lightweight and looks like it won't pill up. The cinch is great too. At this price you'd be losing money if you didn't buy one...