PVC injection molded pvc with triple density technology (tdt) resists degradation from many harsh chemicals; seamless and 100% waterproof foot form contour cushion insole provides arch and heel support, and is removable, washable and replaceable; thick, wide steel shank supports the arch dual-compound center sole offers cushioning and lasts longer; open pattern outsole self-cleans liquid and debris with every step; outsole perimeter is formulated for tough, long-wearing support steel toe impact protection; reinforced at critical stress points for extended durability astm f2413-11 m i/75 c/75; recommended use: poultry or fish processing, oil rigs, general industrial applications Included components: Product & Instructions Guide