Engineered to endure the harshest conditions|the Terra Crossbow work boot provides exceptional comfort in temperatures as low as -60 °C (-76 °F). Its thoughtfully designed 4-layer TERRASPHERE™ lining system offers outstanding protection against the cold. This advanced system includes aerospace-grade nylon with CLEANFEET™ odor-control technology|premium breathable wool that wicks away moisture while retaining heat|and a quilted reflective felt layer for added durability. The Crossbow boot is crafted to keep your feet warm|comfortable|and fully protected|even in the most demanding work environments.