USB Electric Heated Underwear Shirt, 16 Heating Zone Thermal Base Layer Top for Men Outdoor Activities
smooth and thermal: This thermal underwear is made of 95% cotton and 5% spandex. The fabric has been upgraded to make it softer and more breathable. Double the thickness to make the garment warmer.16 heating zone design: Our thermal underwear top is designed with 16 carbon fiber heating elements, which can distribute heat to the mid-back, shoulders and abdomen, helping to improve blood circulation, reduce muscle stiffness, etc., and keep the body warm.Fast and long-lasting heat retention: Adjust the 3 available heat settings (30℃ to 55℃) with the touch of a button. You can adjust the temperature as needed. Powered by 5V battery; works up to 10 hours on a single charge; USB port for charging smartphones.Easy to operate: control heating with one button. After connecting the battery, click the button for 3 seconds to start heating, click to change the heating level. And press the button for 2 seconds to stop heating.Washing instructions: It is recommended to wash this long-sleeved thermal underwear below 40℃. After cutting off the power, add neutral detergent and wash by hand or machine. Do not dry clean, do not rub or beat hard, let it ventilate naturally.