This style is full-grain leather and inside has an air mesh lining to promote airflow. It also features the Durango® X-Pand System™ which is a hidden gore expansion for universal fit and easy on off and the Durango X-treme comfort removable polyurethane footbed with memory foam. The fiberglass shank provides lightweight stability and the little way shank stitch provide ultimate durability. The rolled shank area includes a stirrup grip and the outsole is slip, oil and abrasion resistant. There's a single row sole stitch around the blunt toe and the 1 ½" underslung heel is leather wrapped.