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 45C, it stays at 45C, it 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