A cold weather high altitude essential the mountain equipment womens arete hooded insulated jacket boasts exceptionally lightweight performance and unrivalled insulator and thermal properties constructed using the mountain equipment helium 30 fabric the arete has a tough and bulk free shell inside the jacket boasts 700 fill power pure down insulation that provides high loft water resistant warmth in a narrow baffle layout for all over thermoregulationactivitywalking hiking snowsport