Alpha-D 90 is a fuzzy, exceptionally breathable knit originally developed by Polartec for special forces working in cold, wet conditions — 100% polyester, not wool, despite how it looks. The zipper is the actual design move: a large #8 Vislon two-way pull that keeps climbing past the collar into the hood itself, so it closes over the lower face instead of stopping at the throat. $250, knit in the USA.