| RefrigiWear PolarForce® Max Boot | Waterproof | Black | Ragg Wool/Polyester/Leather | 10. RefrigiWear Boots | Comfort Rating: -40°F to 10°F 800g Heavy-duty insulation Anti-Slip RefrigiWear® outsole Finally, insulated boots that don't skimp on comfort! The PolarForce® Max Boot is waterproof and armed to protect you against -40°F cold with heavy-duty insulation and our comfortable DRI-BLAZE® lining. Keep out winter-weather elements with our waterproof work snow boots. Each boot has an ASTM composite safety toe, rubber heel plates for easy kickoff, and Anti-Slip RefrigiWear® outsoles... - RefrigiWear PolarForce® Max Boot | Waterproof | Black | Ragg Wool/Polyester/Leather | 10. |