When the going gets wet and cold when pitching climbs at altitude, or when the ascent is rocky and technical, the Compressor Alpine Pant is up for the job. Filled to the brim with recycled PrimaLoft GOLD ECO insulation, and durable ripstop where you want (backside and knees), it's the design that shines—it's fully built out like a pant with adjustable waist tabs and side zips down the entire sides so pulling on over base layers is a cinch. Snow and sweaty exertion is unavoidable when climbing at any time other than summer—this pant ensures you stay warm and dry all the way to the summit (but feel free to wear it without a shell when the clouds part).