Onguard Hazmax Men's Green 16" PVC Knee Boots with steel midsole, Ultragrip sipe outsole and steel toe are designed to handle hazardous materials. This one-piece injection molded construction boots are made from a hig viscosity and flexible PVC alloy. Boots have steel toe, steel shank and steel midsole which offer complete PRO ection and non-absorbent polyester lining offer easy cleaning/quick drying. Knee Boots have kick-off lug which is used for easy removal, cut off bands and include replaceable cushion insoles. They are used in dangerous chemicals, gasses or biological hazards, waste applications and meets NFPA 1991 and ASTM F2413-05, CSA Z195 standards.