The Arc’teryx Alpha Parka transforms frigid belays into manageable waits with its technical combination of RDS-certified 850-fill goose down and strategically mapped synthetic insulation that maintains warmth even in moisture-prone areas. Featuring revolutionary Hadron face fabric with liquid crystal polymer ripstop grid bonded to GORE-TEX INFINIUM, this winter climbing masterpiece delivers exceptional wind protection and durability that rivals materials twice its weight. Rock it around town on those frigid winter days or stash it in your pack for those backcountry camping expeditions!