Muck Boots Arctic Pro Steel Toe Work Boots - Men's Bark 9. These Men's Casual Shoes & Boots are designed to protect your feet in temperatures as low as -60 degrees Fahrenheit so that you can stay safe even in the worst conditions. These are thick insulated boots that retain heat while remaining flexible allowing you to work and move easily. Plus they feature 8 mm thick neoprene that is 100percent waterproof and shock absorbent giving you even more versatility with your work. Inside the boots is a warm fleece linging and a thermal foam to provide an extra layer of protection between your feet and the molded outsole keeping your body as warm as possible. These boots are also pretty tall so you can easily tuck your pants into them to keep them dry. Specifications for Muck Boots Arctic Pro Steel Toe Work Boots - Men's: Manufacturer: Muck Boots Gender: Male Age Group: Adults Men's Shoe Width: Medium Boot Style: Winter Boot Color: Bark Activity: Winter/Snow Fabric/Material: Rubber Activity/Occasion: Work Insole Material: EVA Water Resistance Level: Waterproof Footwear Upper Fabric/Material: Rubber/Neoprene Midsole Material: EVA Molded Outsole Material: Rubber Insulation: Fleece Lining Material: Fleece Footwear Type: Boots Features of Muck Boots Arctic Pro Steel Toe Work Boots - Men's Thick 8 mm neoprene provides comfort and flexibility along with excellent waterproofing shock absorption and heat retention properties Adjusts to your foot shape to resist blisters and chafing 2 mm thermal foam under the footbed and warm fleece lining provide exceptional warmth in subfreezing temperatures Comfort rated from -60F/-50C to 30F/-1C Stretch-fit Comfort Topline snugs calf to seal in warmth while keeping cold and debris out Bob-Tracker molded outsole for sure traction on ice and snow. Package Contents: Muck Boots Arctic Pro Steel Toe Boots - Mens Muck Boots ACP-STL-BRN-090: Arctic Pro Steel Toe Work Boots - Men's Bark