New Made in the USA Liners for USAF N-1B Mukluk Extreme Cold Weather Boots 100% Wool Made in USA Genuine USAF Issue Sizing: Medium fits 9-11 Gender: Unisex Adults NSN: NSN 8415-00-177-7994 Modified Item: No Features: Mucker, Wading Liner, Thermal/Insulated Country/Region of Manufacture: United States Color: Off White US Size: Medium Sub-Type: Boots port: Winter Activities Pattern: Snow Brand: US Military Type: Boot Liner