Lightweight and comfortable, convenient to pack and carry in outdoor travel. Adopt a needle penetration process to fully prevent velvet drilling and air leakage. Independent strip down channel design, each down channel is evenly filled with white goose down to keep warm evenly. It is filled with 95% white goose down and has a bulkiness of up to 800, in addition to being comfortable and lightweight. Using 20D nylon lightweight fabric, soft, water-repellent, anti-drilling, lighter and thinner than ordinary fabrics, comfortable and skin-friendly experience.Applicable number: can be stitched double sleeping bag Total weight: 408 grams Comfort temperature scale: 5°C-15°℃ Limit temperature scale: -9 Filling: goose down Applicable season: winter Lining material: nylon cloth Applicable object: Adult Outdoor fabric: nylon cloth Style: Mummy easy to deal with indoor and outdoor temperature changes, soft and comfortable, warm and breathable.