Sleeping bag dedicated to mountaineering and expeditions. The advanced-camp bag that offers the thermal performance of 1050g of water-repellent treated grey goose down, for a standout warmth-to-weight ratio. Bivy Warm System a technology allows optimal versatility of use while bivying. KDRY™ hydrophobic goose down fillInsulation Shield Construction™: V-chamber bafflingRipstop Nylon shell: rugged, lightweight, water repellent Side 3/4 zip with anti-cold flapBivy Warm System to remove right arm from bag and be active, but stay warmPreshaped hood with tightener / Shoulder collar / Inside pocketWaterproof compression sack Millet - Trilogy Summit - Sleeping bag