Tingley Rubber 31251.04 4 PVC Steel Toe Sock Boot, Black Rubber Injection molded construction for 100% waterproof protection. Flexible upper material stays supple in cold temperatures to make walking easier. Tougher outsole material for good abrasion resistance. Steel toe meets ASTM F 2413 M/I/75/C/75. Self cleaning cleated outsole spits out debris as you walk. Removable EVA contour insole for great comfort.