Comfort Rating: -20° to 30° F 600g Heavy-duty insulation Waterproof A durable crossover boot with a stylish design, the Tungsten Hiker features lightweight construction to reduce foot fatigue. Shock absorbing midsole, slip resistant outersole, composite toe, and ankle height all provide foot protection and 600g heavy-duty insulation provides comfort between -20° and 20°. The heel plate, kick off ledge, pull-on tab, and waterproof exterior all make this boot tough and durable. THE SIZES SHOWN ARE MEN'S SIZES. PLEASE SEE THE SIZE CHART LINK ABOVE FOR WOMEN'S EQUIVALENTS. Comfort Rating: -20° to 30° F 600g Heavy-duty insulation 6" Nubuck Leather upper Anti-Slip RefrigiWear® outsole ASTM composite safety toe Rubber heel plate for easy kickoff Rubber toe guard Waterproof VitaComfort® anti-fatigue and gravity-fed moisture management system Electrical Hazard compliant Tungsten Hiker Boot