The Marmot Hydrogen Sleeping Bag – Dark Citron/Olive is perfect for your next outdoor adventure! This compact bag delivers enough warmth for ultra-light cool-weather climbs and backcountry excursions. Rated to -1°C, the Hydrogen Bag remains lightweight for fast climbs and hikes. The anatomically designed foot box has a wrap-around construction that increases warmth, whilst the smooth-curved baffles reduce the down from shifting and therefore limits the heat loss. The fold-down second zipper provides you with added ventilation when you need it and easy access to the bag. The main zipper has an anti-snag slider in order to reduce any snagging.