This design has detailed stitching with strap and button accents at the upper calf. It has a full-length inside zipper and hidden goring at the calf with straps that provide a unique and custom fit. Insulating wool interior lining and padded footbed wrap your feet and legs in all-day comfort. It also has soft, cloth-covered insole that's removable for your custom orthotics. The lightweight and flexible polyurethane outsole has rugged tread detailing for durability.