Full-Grain Leather & Cordura Uppers. GORE-TEX (GTX): 100% waterproof and breathable. GORE-TEX liners ensure no water gets in, while allowing sweat and moisture to get out. 400 Gram Thinsulate. insulation. Vibram Sierra Outsole. Stitchdown construction. Boots are new and never used. Size 8 1/2 D Missing original box and one shoe shows signs of minor scuff ( see photos). Best offer accepted. Shipped USPS Ground Advantage with cost based on zip code.