TheseUSB Charging Electric Thermal Heating Trousersare a great example of functionality and comfort. Made from high-quality polyester and spandex it is stretchable and provides significant warmth in cold climates. It provides provide optimum levels of protection to the wearer. These USB Charging Electric Thermal Heating Trousers will come in handy for ice climbing, skiing, mountaineering, etc. Additionally, you can choose from four exquisite hues.