This Sleeping bag is made of Kingloft filled cotton, which is comparable to down warmth, is light and warm (developed according to the characteristics of natural down, mainly to improve the bulkiness, using air to keep warm, and the insulation effect is close to 80% down. The bulkiness under the best test sample state Can reach 620PF.). There is the fixed buckle, and this blanket can be used as small pillow or headrest after packing, and also as sleeping bag in emergency. The sleeping bag is made of 20D nylon fabric, water-repellent and anti-drilling, durable and light; and self-folding zipper outer pocket design reduces storage volume and is convenient to carry.