Shackelton's long walk across the arctic might not have been so bad if he'd had the Alchemy Equipment Men's Wool Performance Down Shacket by his side. Made with a Teflon treated Portuguese wool blend and insulated with a blend of 750 fill down and PrimaLoft Gold fibers, the Wool Performance Down Shacket will effectively deal with the coldest winter days, as well as a bit of moisture. Its no secret that wool is pretty much useless if it gets wet, so the magicians over at Alchemy Equipment went ahead and combined their hydrophobic down with water resistant synthetic fibers, then stuffed it all in a weather resistant wool material for superior breathability and temperature regulating properties. Sound like a lot of benefits' Well, that's because there are, but it doesn't stop there. Inside is a windproof Pertex nylon to shut out any cold winds you might encounter, while back vents help to keep you cool if you should happen to overheat. The cut of the jacket fits like a cross between a shirt and jacket and has a modern look you can wear either in the city or on the trail.