Extreme winter weather is no match for the new Pac Max work boots with an impressive list of performance, comfort, and safety features that are essential for working in frigid work environments. For extreme warmth, these boots include a heavyweight liner with insulation rated to -76 degrees Fahrenheit. Additional safety features include electrical hazard protection, puncture-resistant plates, and 3M™ retroreflective tape on toes and heels for 360-degree visibility. Heat, oil, slip, and abrasion-resistant, non-marking All-Weather TPU outsoles offer superior traction in tough conditions and are compatible with crampons for even more grip on frozen terrain.