The Mountain Hardwear Compressor Jacket gives you a highly compressible design with a amazing warmth-to-weight ratio. With Mountain Hardwear's MicroClimate zoning construction to give you more insulation where you need it and less where you get warm first. Combined with Thermic Micro insulation, you get a jacket that gives you amazing compression and warmth while making sure you don't get clammy or overheated. Also featuring fleece-lined handwarmer pockets, one-handed neck and hem drawcords seal in warmth and interior pockets to keep all your valuables on you.