Specifically designed for the North American climate. Light weight abrasion resistant Polyurethane (PU) moulded boot. Wide fit through the calf and foot. Thermal PU compound is cold crack resistant to -50°C. Gel flex PU midsole provides comfort and reduces fatigue . Acid and oil resistant rubber outsole provides superior traction at extreme cold temperatures. New lug outsole design provides added traction on packed snow and icy conditions . Minus -50°C/-58°F comfort rated. Metal free safety toe and plate. Comfort crafted insole. CSA / ASTM / CE approved ESR / EH rated.