Take on tough jobs in extreme cold weather in Muck’s warmest steel-toe boots. Lightweight and completely waterproof, they boast 8mm CR flex-foam booties with four-way stretch nylon for exceptional flexibility. The 2mm thermal foam underlays in the insteps block cold, yet retain maximum warmth. Fleece lined for additional heat-trapping comfort. Cushioned EVA midsoles with ergonomic, contoured footbeds. Calf-hugging stretch-fit bindings seal in warmth and keep cold out. Double-reinforced insteps, heels and Achilles for durable, long-lasting wear. Aggressive, bob-tracker outsoles provide stability and all-terrain traction. Toecaps with wrap-up bumpers. Meets ASTM F2413-05 standards. Comfort range: 40°F to -60°F. Imported. Height: 17.5". Men’s whole sizes: 7-14. Color: Bark.