12 in cutline for customizable boot height. Seamless polyurethane construction is 100% liquidproof. Up to 30% lighter than most steel toe PVC and rubber knee boots. Exceptional resistance to fats and oils. Abrasion resistant for long life. Self-insulating keeps feet warmer in the cold and cooler in the heat. Fully lined interior and a removable, contour PU insole for superior comfort. Soft and flexible upper material for all day working comfort. Self-cleaning, slip resistant, cleated outsole for superior grip on a variety of floor surfaces and conditions. Tingley Steplite X Knee Boots, Series: 77253, Men’s, Size SZ 7, 15 in Height, Navy/Yellow, Steel Toe, Cleated Sole, Pull-On Closure, Bekina Polyurethane Upper, EVA Midsole, Bekina Polyurethane Outsole, Bekina Polyutherane Shank, Resists: Alkalis, Bleach, Fats, Fuels, Industrial Salts, Manure, Mild Acids and Oil, ASTM F2413-11 M I/75 C/75 EH Specifications Met