Congratulations on finding a high quality and reasonably priced Heated set. Features: 1. Fast heat, dispel cold and keep you warm. 2. 3 step temperature control, intelligent heating. 3. Do Not wring it by hand. 4. General USB interface power supply 5. A good partner for your winter going out. Specification: Material: 92% Polyester + 8% Spandex, Carbon fiber wire Fever Area: Shoulders, back, elbows, waist, abdomen Temperature Range: 30℃-50℃ Color: Black Size: M/L/XL/XXL/3XL/4XL/5XL Power Interface: USB Interface Power: 5V 2A/2.1A Rating Voltage: DC/5.0V Suitable Season: Autumn and winter Applicable Crowd: Man, woman Suitable Scence: Fishing, skiing, hikking, camping, etc. Packaging included: 1* Heated set (Note: Not included power bank) Washing instructions: 1. Take out the portable power supply. 2. Use neutral detergent and then wash by hand or machine 3. Do not rub or beat hard 4. Do not wring dry 5. It can be used after natural air drying Tips: Do not use the heating cloth in wet environment, keep the heating cloth dry is necessary. The usage time depends on the size of the charging capacity.