| RefrigiWear Permafrost Hiker | Waterproof | Black | Ragg Wool/Leather | 9. RefrigiWear Comfort Rating: -15°F ASTM composite safety toe CSA puncture-resistant plate Don't let the freezing temperatures boot you out of action. Embrace the unstoppable power of the Permafrost Hiker Boot and conquer the coldest challenges with ease. Designed for men who demand both warmth and durability, these insulated work boots are built to withstand extreme conditions. With 400g insulation, your feet will stay cozy down to -15°F. The buffalo leather upper provides rugged protection, while... - RefrigiWear Permafrost Hiker | Waterproof | Black | Ragg Wool/Leather | 9. |