These are vintage items, so there may be stains, scratches, and deterioration of the fabric and rubber due to storage. Please only purchase if you understand that these are vintage items. There are some color differences (fading) and stains between the left and right boots. Size: L (See size chart below) 1981 Budget Wool Socks, Size L, with stains. These are authentic U.S.A.F. N-1B Maclack Canvas Boots. Official Name: BOOT, EXTREME COLD WEATHER, N-1B Canvas boots used by the U.S. Air Force in cold regions. Originally, these were designed by the U.S. Air Force in the 1950s as cold-weather boots, based on Eskimo boots used by Inuit and other people in extremely cold regions. You can adjust the fit with the shoelaces, add insoles, or adjust the fit with thick sports socks. You can also enjoy a unique style by folding them over to change the look. Heavy canvas fabric with large zippers. The impactful design adds an accent to your outfit. These are valuable boots that are rarely available. U.S.A.F. Size | Japanese Size (Approximate) S | Approximately 23.5cm - 24.5cm M | Approximately 25.0cm - 26.0cm ※L | Approximately 26.0cm - 27.0cm XL | Approximately 27.5cm - 28.5cm XXL | Approximately 29.0cm - 30.0cm Size Selection Tips: Presence of Wool Inserts: If you are using wool inserts, the above size guide should be fine. Fit: These boots are originally designed for extremely cold regions, so they are made quite roomy and differ from the size of general Japanese shoes. Actual Measurement Check: Since actual items and deadstock items have individual differences, it is recommended to check the actual measurements of the outsole and insole at the store if possible. These sizes are only a guide, and the appropriate size will vary depending on the shape and width of your foot, and how you wear them.