I have to say, I almost love this thing. But I live on the Arctic tundra, and can't use it if it's colder than -20F or so. The tiny holes in the Windstopper fabric let in WAY too much cold air, and moisture builds up like crazy. I wore it at -30F and could feel ice forming on my lips. I imagine it's great when it's a little warmer; alas, that's not likely to happen here until the Sun comes back in late January. I'm debating between returning it or modifying it by sewing a layer of thin fleece over the breathing holes. It has good points, too. the thin fabric on the head is actually very warm, and with the hood of my parka keeps my head very warm even at -30F with wind. The piece that covers the top of the head also folds back very easily and comfortably, which is great for me as my head overheats frequently. If your plan is to use it somewhere frostbite in 10 minutes or less isn't a concern... I say go for it. If you plan to use it in an extremely cold environment, plan on modifications to avoid frostbite.