The Baffin ICEBEAR Boot is designed for extreme cold conditions with a Thermal Polyurethane (TPU) upper that's abrasion-resistant and cold crack resistant. It has a wide fit through the calf and foot for comfort. The boot features a Composite Safety Toe and Plate, Polar Rubber® outsole for grip in cold temperatures, GelFlex anti-fatigue midsole, and PU insulation for warmth. It's tested for traction on various surfaces and holds CSA, ASTM, and CE approvals, along with ESR/EH ratings. This boot is a reliable choice for extreme cold work environments. COLD COMFORT RATING TUNDRA RATED B-TEK™ DRY WATERPROOF Upper: Lightweight abrasion resistant Thermal Polyurethane (TPU) molded boot Thermal Polyurethane (TPU) compound is cold crack resistant Wide fit through the calf and foot Base: Composite Safety Toe and Plate Polar Rubber® outsole for maximized grip and longevity of boot at cold temperatures Oil and acid resistant rubber outsole provides superior traction Lug outsole design provides added traction GelFlex anti-fatigue midsole for shock absorption and rebounding Anti-fatigue insole Tested in accordance to Z195-14 for Coeffiency of Friction (COF) on Quarry tile/stainless steel/wet and dry surfaces, at room temperature and cold climate conditions Insulation: Polyurethane (PU) insulation for thermal regulationCSA/ASTM/CE approved and ESR/EH rated