RefrigiWear Tungsten Hiker Boot - Waterproof, Insulated 。Refrigiwear Tundra Size 10.5 Rubber on heel is showing a white color, it is not cracked or brittle. Minor wear from normal use throughout Retail is $235 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 30°. The heel plate, kick off ledge, pull-on tab, and waterproof exterior all make this boot tough and durable. Comfort Rating: -20° to 30° F 600g Heavy-duty insulation ASTM F2413-24 I/C EH SR rated composite toe Protects from impact and compression of the toe area Protects against accidental stepping on live electric wires Slip resistant for general wear environments in wet and dry conditions 6\" Nubuck Leather upper Rubber heel plate for easy kickoff Rubber toe guard Waterproof VitaComfort® anti-fatigue and gravity-fed moisture management system