The premium warmest weight stretch woven softshell pant from Arc'teryx made with durable nylon woven on the outside, and with a soft, warm, comfortable polyester micro fleece-like feel on the inside. Perfect for all of your coldest weather alpine hiking, climbing, mountaineering, and backcountry skiing when a midweight softshell pant just isn't warm enough. Also great for wearing underneath your ski pants for colder weather lift skiing. This is the warmest softshell pant available from Arc'teryx.