This cold–weather, tough-duty boot is ideal for uniform use in deep winter. The ultra-warm PrimaLoft® 400 gram insulation and a 8” tall shaft offer serious protection against the elements, while the VIBRAM® Arctic Grip® outsole provides unparalleled traction on slick, icy surfaces. A closed lace-loop system features a locking lace loop to allow the user to customize different tensions between the ankle and foot. Durably waterproof/breathable.