Ultra-lightweight: Weighing approximately 680g and with a compact storage size of φ12 x 29cm, it's perfect for outdoor activities, hiking, and easy to carry. Comfortable Warmth: The interior is filled with 80g/m³ artificial silk cotton, with a comfort temperature of 15°C and a lower limit temperature of 8°C, making it ideal for summer camping. Improved Breathability: The zipper design, which can be opened and closed on both the front and back, allows you to put your feet out, and by connecting the left and right sides, breathability is further improved, preventing stuffiness and sweat on the soles of your feet. Waterproof and Moisture-proof: The outer fabric is 20D 380T nylon fabric, which is waterproof, prevents moisture from entering, and extends the life of the sleeping bag. Good Texture and Comfort: The inner fabric is 240T spring hemp fiber material, which feels good against the skin, improves comfort, and supports a good night's sleep outdoors.