The superlight, ThermicMicroª synthetic filled Mountain Hardwear Compressor Pants provide excellent warmth-to-weight ratio, compresses easily and insulate when wet. The Compressor pants are specifically designed for backcountry activities where moisture and weight are factors. Full-length side zips on the Compressor give you venting possibilities on your uphill climbs, and the articulated knees give you plenty of room for knee-drop skiing and mountaineering hikes. The Compressor Pants' reinforced seat and knees keep these ultralight performance pants around season after season.