USB Electric Heating Down Cotton Sleeping Bag 3-speed Temperature Adjustment (180+30)x75cm(Blue)1. Sleeping bag that can be heated, 3 temperature adjustable (40 45 degrees Celsius 45 50 degrees Celsius 50 55 degrees Celsius) 2. The inner lining of Chun Yafang is skin friendly and comfortable, without the feeling of hard objects 3. Filled with soft down cotton, keep warm without pressure, breathable and dehumidified without peculiar smell 4. The outer fabric is water repellent 201T plaid, tear resistant 5. The bottom of the sleeping bag can be