Features: 1. Energy Saving: Carbon fiber heating material, good thermal conductivity, heat up quickly after inserting into USB port. The heating part is thicker and the heat dissipation is uniform. 2. 3 levels adjustable with: Timing function and the set time is 60 90 120 minutes. The power will automatically turn off after the scheduled time to prevent accidents due to forgetting to turn off the power. 3 levels: high medium and low. 3. Multifunctional electric shoulder bag: When working in the cold winter, hang the electric mat on your shoulders to keep your body warm. also as a knee rest. 4. Hand washable skin-friendly material: soft and fluffy material, hair is not easy to fall off and not easy to fade. Excellent abrasion resistance easy to clean easy to dry. 5. Convenient and practical: you can cover your knees, wrap your waist, hang it on your shoulders, and use electric heating pads, etc. to heat it. Safe and Eco-Friendly: The USB heater has low voltage and low power consumption requiring DC5V 4W. The voltage below 36V is a safe voltage and there is no danger of electric shock. Specification: Power supply mode: USB Color: black/brown Material: carbon fiber Size: about 45 x 80 cm/17.7 x 31.5 inch Power: 4W Voltage: 5V Packing list: 1 * heating shawl USB Material: synthetic fiber Origin: Mainland China CN: Guangdong Feature: Adjustable temperature Size: 80x45 cm