Description Nubuck Leather & 1000 Denier Nylon Uppe:rFor abrasion- and scuff-resistance, we use full grain nubuck leather combined with lightweight, breathable Denier nylon. This combination offers some of the best protection in cold and wet environments. GORE-TEX (GTX): 100% waterproof and breathable, GORE-TEX liners ensure that no water gets in, while allowing sweat and moisture to get out. Danner Airthotic: This molded polyurethane instep cups the heel and supports the arch of the foot. Its half-length shape includes perforations to help air flow within your boots. Vibram® Kletterlift Outsole:Specifically designed for comfort and durability; the heel provides superb shock absorption and the rubber compound guarantees great traction and stability on both wet and dry surfaces. Stitchdown Construction: Handcrafted to provide a wider platform, our legendary stitchdown construction offers increased stability underfoot. Many of our stitchdown boots can be recrafted. How It Fits: The 650 last offers a sleek, slender profile with a more narrow fit. Boots on this last tend to fit those with a more narrow foot better than those with a wider foot. This ensures a snug fit for terrain and activities that demand support and stability. If you do have a wider foot, we recommend ordering an “EE” (wide) in this style. Recraftable: Extend the life of your boot with our recrafting services. This boot is eligible for a number of paid services, including part replacement, leather care and restitching. See Danner’sRecrafting page. 365-Day Warranty: If you suspect your purchase isn’t up to our unrelenting standards, or is defective in any way, we want to make things right. We offer a 365-day warranty across our entire footwear line.