A. This sleeping bag is designed for adults and is an ideal companion for your outdoor adventures and daily rest. It features an envelope-style design that fits snugly around your body, offering you a comfortable and warm experience. B. The filling, lining, and outer fabric of the sleeping bag are all made of polar fleece. Polar fleece has good insulation properties, effectively locking in heat and keeping you warm in cold outdoor environments. Whether you're camping in all seasons, traveling in the wild to fend off the night chill, or adding extra warmth during a lunch break, this sleeping bag comes in handy. It can also be used as an air-conditioning quilt in an air-conditioned room to maintain a suitable temperature and prevent you from catching a cold. Additionally, it makes a good knee blanket to protect your knees from the cold. C. This sleeping bag weighs only 600 grams, making it easy to carry without adding much burden to your journey. Its dimensions are 183 cm × 83 cm, which is sufficient to meet the needs of adults. D. This sleeping bag is not only suitable for outdoor use but also performs well indoors. It is both practical and convenient, and it is a product with authorized branding. You can trust its quality.