This balaclava is brand new, and has only been tried on for fit. When I found out it was tight on me (I have a 7.5" [19.05cm] hat size, so it was a tad too small) I decided to sell it. Judging by the feel of it, as I have a Klim balaclava that is, I'm GUESSING this balaclava is wind-resistant. It also has a lined interior of polar fleece.