Designed and tested in Oregon, the Nike ACG Antarktik is a "jacket" for your foot. Its tough ripstop upper combines with a GORE-TEX lining to help keep your foot dry. All-new lug details use hard rubber for traction in all conditions. Weather-Resistant Upper Tough ripstop fabric uses GORE-TEX for a durable, water-repellent design. It combines with a synthetic mudguard on the toe to help keep dirt and debris away. Plush Cushioning Nike Zoom Air cushioning combines with plush foam for a responsive feel that'll keep you comfortable on rocky terrain. Ready for All Conditions An updated lug design at the outsole keeps dirt from clogging and provides traction. A hard rubber outsole is tough enough for the trails.