THE SECRET OF KEEPING WARM IN WINTER Leegosun - Heated Thermal Underwear for Men and Women - USB Power Supply Leegosun specialized in customizing highly efficient heat-generating, energy-saving, comfortable and warm clothes for you in winter. Heated clothing helps you get rid of bulky jackets in cold weather and stay light and agile during outdoor activities. Long-lasting warmth and reduced chances of getting sick due to cold wave. Carbon Fiber Heating - Superior Heating Technology, Enjoy the Winter! Our heated undershirt uses carbon fiber far infrared heating elements, which evenly distributes heat throughout the body. Carbon fiber is a high performance, hard, corrosion resistant and high temperature resistant conductive and thermally conductive material. Heats evenly, washable, anti-static. Larger Heating Zone - Safe Elements Heat across the whole back areas of the body, this heating base layer will keep you warm all the day. You can wear it under your coat. We Are Work for Better Thermal Insulation! Good Heat-retaining Properties Quality fabric can help to keep cold out and prevent heat from losing that makes the best heat retention. 3 Temperature Levels The heating level can be simply adjusted by pressing the button. The button is designed at the tail of the thermal shirt, it is convenient to customized warmth . Soft Fleece Lined Heating undershirt is made of breathable and moisture wicking fabric help to reduces heat loss. The fleece lining keeps you warm for longer, making it a comfortable thermal base layer shirt even without the heating on. Heated Thermals Specifications Material: 95% Cotton, 5% Spandex, Heating Elements Style: crew-neck design, unisex, regular fit base layer. Properties: fleece lined, machine washable, adjustable temperature Temperature Range: 30°C-50°C (86°F-122°F) Usage Time: Works 6-12 hours with a fully charged 10000mAh power bank. Care Instructions: Please choose the neutral detergent and make sure the water temperature less than 30 ℃.Hand wash recommend. Machine washable. If possible, put it best in a laundry bag.Do not iron, do not wring, do not exposure, please hang dry in shade.