Features: 1. Warm & Soft Material: Made of premium skin-friendly polyester fiber materials, super soft and comfortable to use and also ensures long-lasting warmth, perfect for cold autumn and winter days. 2. USB Powered: With the USB interface design, the heated sleep bag can be powered via your PC, power bank, car charger, etc. 3. Multipurpose: Heated sleeping bag can also be used as sofa seat cushion, heated blanket, heated car seat cushion, etc. 4. Constant Temperature 45 Degrees: Once heated to 45°C, it stays at 45°C, easy to carry and won't take up too much storage space. Perfect for outdoor activities like hiking, travelling, camping, climbing, and hunting. 5. Warm Gift: With a simple but elegant outlook, it is also an ideal gift choice for your kids, wife, friends, grandparents, or work colleagues on birthdays or Christmas. Specification: Material: Polyester Fiber Product Color: Black, Grey, Blue Product Size: 200 x 80cm, Unfolded: 200 x 160cm Product Weight: 920g Rated Power: 10W Rated Voltage: 5V Package Included: 1 x USB Heated Sleeping Bag