Good for Backcountry Winter hikers, stop making do with ski packs: The 1,700-cubic-inch AirZone Snow is designed specifically for you. The back panel is more like one found on a warm-weather backpack.
Kate Siber is a freelance writer (katesiber.com) and a correspondent for Outside. She lives in Durango, Colorado with her husband, a large dog, a small cat, and a preponderance of sporting equipment.