Classic Hi plain toe work boot with stretch-fit topline binding to keep warmth in and cold out. 100% waterproof, lightweight and flexible. Comfort range: Sub-freezing to 65 degrees Fahrenheit. Features breathable Airmesh lining for all day comfort and 5 mm (millimeter) CR Flex-foam insulation with 4-way stretch nylon. Triple reinforced in the toe area and quadruple reinforcement in the heel area. Additional Achilles reinforcement for added protection. Steel shank for additional arch support and protections from punctures underfoot. Durable, non-slip, easy-clean outsole is safe in wet, messy conditions.