| RefrigiWear Tungsten Hiker Boot | Waterproof | Lightweight | Gray | Ragg Wool/Leather | 13. RefrigiWear Boots | 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.... - RefrigiWear Tungsten Hiker Boot | Waterproof | Lightweight | Gray | Ragg Wool/Leather | 13. |