King Rocks Waterproof Work Boots Men's 6" Boot for Contstruction with 3M Thinsulate Insulation rubber sole Dual Density Sole - The dual-layered EVA midsole and rubber outsole combined makes for an unmatched boot that provides superior traction and oil resistant qualities Waterproof - breathable and waterproof qualities make this boot ideal for use in harsh work conditions and when performing strenuous activity Insulated - 3M Thinsulation Technology helps maintain warmth for your feet during cold conditions Steel Shank - steel shanks provide extra support around the arch of your foot, a necessary feature for heeled work boots. Shanks help alleviate the pressure caused by standing on rigid, uneven surfaces, climbing ladders, or kicking a shovel. Not only do shanks provide comfort, they can help protect your feet from being punctured. Goodyear Welt Construction - this construction method creates a superior bond between the uppers and the outsole. Known to be one of the strongest and labor intensive ways to make a shoe, Goodyear Welt prevents sole separation and allows your boots to be resole-able