When youre looking for a three-season sleeping bag with synthetic insulation, choose the Halti Oxygen 30. Its comfort temperature is -2°C and its limit temperature is -8°C. The Oxygen is a reliable choice for Autumn and Spring adventures, and also suitable for colder than average Nordic Summer conditions. - Size M: suitable for max. 185 cm users - The shell fabric, lining and insulation fiber are made from recycled fiberthe insulation more precisely from recycled plastic bottles - The Thermotec insulation fiber is used in two layers in the bag - There is a proper draft tube along the zipper - The thermal collar prevents warm air from escaping - The product contains no PFC compounds - Stuff sack with compression strapsNOTE! At home, store the sleeping bag outside this stuff sack to maximize its service life The temperature ratings of this sleeping bag have been tested in accordance with the EN 13537 standard.