100% Leather Made in the USA or Imported 10" tall 2.8 mm thick premium full grain leather uppers that utilize a one piece vamp construction with no seams down the tongue for better abrasion resistance and waterproofness Reinforced double and triple stitching in high wear areas and anti-corrosion boot hardware that swivels instead of breaking 7 mm nylon midsoles for extra support with heavy pack loads Windtex waterproof breathable flexible membrane and 400 gram Thinsulate for warmth without the bulk Kenetrek K-73 outsole for great traction and added durability, along with a reinforced rubber sole guard for extra abrasion resistance