Pair of insulated thermal insoles for men’s and women’s boots and shoes Ideal for keeping feet warm when working or playing outside in cold weather; rated to -13 degrees Fahrenheit Made from fray-resistant, moisture-wicking blended woolen polar felt and recycled blended felt for cushioning and insulation Radiantex thermal layer redirects body heat to feet to keep them warm and dry Insulated footbeds are trim-to-fit; designed to fit men’s and women’s boots and shoes, from a women’s size 6 to a men’s size 12