Product detailed description Materials upper part rubber sheep wool lining and insole, aluminum foil in the insole for higher thermal insulation rubber sole Size chart In the table we always indicate the inside size of the shoe. We prepare the table based on our own measurements with the Plus 12 (inner length) and Clevermess (inner width) tools. Optimal   excess   for rubber bands it is 1-1.2 cm. Recommendations for measuring the foot and choosing the appropriate size:   How to choose shoes Made in China, the materials meet European standards and are safe. Bundgaard Sailor High Warm Army insulated boots