Whether we're giving our partner a catch at the winter wall or braving the elements for a summit snag, we're packing along Mountain Hardwear's Compressor Alpine Pant. The featherweight ripstop materials safeguard the lofty, heat-trapping fill that keeps our legs primed for the climb. This pant arrives with its own stuff sack for safe keeping until we've gained elevation, while the full-length side zips make it easy to slip them on over our boots.