Attention: Welcome to my shop We ship the product from China, the delivery time is 7-14 days Upgraded heating elements generating heat across the neck and back to make you feel warm in 360 degrees. One button for 3 heating settings, made of soft skin-friendly material which ensures smooth and comfortable feeling. Features: Activates various functions between skin and promotes metabolism. Body warming and blood-circulation: it warms the human body, consumes excess heat, increases blood-oxygen and fluidity. Vitality restoration: it provides deeper adjustment of physiological functions to avoids sub-health state and restore the vitality. Set the temperature you want to respond to a variety of environments. A button to heating, three stall temperature control, intelligent heating. General USB interface, longer service life, anti water splashing. Comfortable and breathable, and it& 39;s a nice partner for your winter going out. Two heating pads, one on the back and one on the neck, Warm you whole winter. Specifictions: Size: M, L, XL, 2XL, 3XL, 4XL (optional) Color: black, red, dark blue (optional) Main material: cotton, polyester Interface: USB Temperature shift: Warm: 45-55 Degrees (Red Light) Comfort: 35-45 Degrees (White Light) Energy saving: 25-35 Degrees (Blue Light) Length: M: 650mm L: 670mm XL: 690mm 2XL: 710mm 3XL: 730mm 4XL: 750mm Shoulder: M: 403mm L: 415mm XL: 427mm 2XL: 439mm 3XL: 451mm 4XL: 463mm Bust: M: 1.06m L: 1.10m XL: 1.14m 2XL: 1.18m 3XL: 1.22m 4XL: 1.26m Collar height: 75mm Package size: 400 * 300 * 70mm / 15.8 * 11.8 * 2.8in Package weight: M: 281g / 9.9ounce L: 301g / 10.6ounce XL: 321g / 11.3ounce 2XL: 341g / 12.0ounce 3XL: 361g / 12.7ounce 4XL: 381g / 13.4ounce Note: According to the cold weather conditions, the heat response time will be delayed. The delivery does not come with a power bank, and the customer needs to purchase a 5V, 2.1A power bank separately. Below this voltage, the current cannot be driven. After the clothes are signed, they need to be placed in a ventilated place for 1-2 days to prevents the clothes from smelling. Or wipe it with a wet towel and place it in a ventilated place. The size of the clothes is smaller, please make a correct choice according to the size chart. Packing List: 1 * Heating Coat