Item Type: Heated Vest Material: Polyester fiber Operating Temperature Range: About -5 to 40 Waterproof Class (IP): Class 3 Power Supply: 5V/2A mobile power supply (excluded) Temperature Change: Manual adjustment Warm File: 45 (red) Comfort Mode: 35 (white) Energy Saving Gear: 25 (blue) Uses: Fashionable, warm, comfortable and breathable, it is a good companion for going out in winter. Package List 1 x Heated Vest 1. The size corresponds to the Asian size, and the European and American sizes need to be two sizes larger.2. Cleaning instructions: It can be machine washed or hand washed, please do not wring it out by hand. 1[All Round Heating] There are ten heating pieces in the vest, covering most places, giving you all round warmth and care. 2[3 Temperature Adjustment] The vest can be heated with one button, with three speed temperature control, intelligent heating. 3[Waterproof] The waterproof level of this vest is class 3, which has a certain waterproof effect and can be worn with confidence. 4[Infrared Heating] The heating film adopts imported carbon fiber heating wire, which is infrared heating and does not harm the human body. 5[Warm and Cozy] This heating vest can be paired with any outfit and is suitable for winter wear, warm and comfortable.