Heated Insoles: Get a pair of USB heated shoe insoles. Size Options: Available in UK 4 - UK 9. Easy to Use: Simply place into your shoes once charged via USB make sure your shoes keep you nice and warm. Heating System: These insoles are made from infrared carbon fiber and designed to keep your feet toasty by heating the whole surface of the insole. Package: Includes 1 set of insoles and 1 USB cable. Comfortable: Made from a waterproof material, these insoles easy to be kept clean and will last you year after year. Usb Heated Shoe Insole | Living Social | Living Social