Comfort Rating: -15°F to 35°FAnti-Slip RefrigiWear® outsoleASTM Composite safety toe Get safety and style in one hard working boot. This waterproof Frostline® Hiker Boot is ready for your hard day. The Frostline® Hiker Boot is a freezer boot that won't crack under the pressure or from the cold. With protection down to -15°F, winter temps will feel like a summer day. When workers aren't weighed down, they accomplish amazing things. With Frostline® Collection, you get incredibly lightweight gear that is durable, flexible and crazy warm. Comfort Rating: -15°F to 35°F 400g Insulation 6" Leather/nylon upper Anti-Slip RefrigiWear® outsole ASTM Composite safety toe Waterproof Rubber heel plate for easy kickoff VitaComfort® anti-fatigue and gravity-fed moisture management system Electrical hazard compliant Frostline® Hiker Boot