This is known as the best alpine jacket you can buy. Normally it retails for $750 (partly because it's made by hand in Canada) but you can get a stellar price here! Way more than half off. Here's what Moosejaw.com says about the jacket:The reason that I love Arc'teryx jackets, apart from their flawless construction and seemingly endless list of technical features, is that they give me the option of doing some extreme alpine excursions. Here's the thing about me, I probably won't do any alpine mountaineering, but I love having options. The Arc'teryx Men's Alpha SV Jacket, designed for severe conditions, opens up those options. The GORE-TEX® Pro fabric shell is fully waterproof (with WaterTight™ zippers all around) while remaining breathable, lightweight and durable enough to function perfectly under a harness. Pit-zips allow you to further regulate ventilation and temperature. While bred for mountain tops, the Alpha SV won't judge you if its primary usage is day to day comfort and protection.Products on Sale are Discontinued Styles or Colors. FEATURES of the Arcteryx Men's Alpha SV JacketMade with hard wearing N80p-X GORE-TEX® face fabric engineered to shed water, snow and resist abrasion while staying soft and quiet compared to other shell materialsAthletic e3D patterning provides room for three layers while facilitating movementHelmet-compatible StormHood rotates without blocking vision and is designed to provide the ultimate protection in cold or wet weatherWaterTight pit zippers permit rapid ventilationTwo large bellowed chest pockets, perfectly placed to fit above your pack or harness, two internal laminated pockets and one sleeve pocketHem drawcord and HemLock removable inserts prevent jacket from slipping out from underneath harness. Insert can be removed when not neededMicro-seam allowance (1.6 mm) reduces bulk and weightFully seam-sealed for waterproofnessOne-hand adjustable drawcords make your life easierArticulated patterning and no-lift gusseted underarms for unrestricted mobilityLaminated die-cut Velcro® cuff adjusters with elasticCorded zipper-pulls reduce noise and are easy to grab