The Cofra Tanker3 Men's Steel Toe Rubber Work Boots feature a Cold Defender PU upper that is resistant to temperatures of -25°C/-13°F, as well as an abrasion resistant heat-sealed polyester lining. Antibacterial Sany-Dry is used in the upper layer to prevent bad odors. A removable Poly-Bed insole is both antistatic and effective at absorbing and releasing moisture. The Cold Defender TPU outsole is also resistant to -13°F/-25°C and a steel toe cap and anti-perforation midsole provide additional protection.