Okay, if you work around nasty chemicals, hazardous waste, or bio-gunk, these boots are built for that. The Bata Onguard Hazmax are serious 16-inch tall PVC knee boots. They're not your average rain boots – they're a single piece of injection-molded, high-viscosity PVC designed to handle dangerous stuff without absorbing it.
They come packed with safety features: a steel toe cap (meets ASTM F2413-05), a steel shank and midsole for underfoot protection and support, and a special \Ultragrip Sipe\ outsole to keep you from slipping. The inside has a non-absorbent polyester lining that's easy to rinse and dries fast. They even have a handy kick-off lug on the heel so you can get them off easily, plus a removable cushioned insole for a bit of comfort.
These are certified to meet NFPA 1991 and CSA Z195 standards for hazardous materials environments. They're made right here in the USA, they're a bright safety green, and they come in a big size 15. If your job involves chemicals, gasses, or waste cleanup, these boots are your tough, reliable barrier between you and the hazards. Just remember, they're for protection first, so they're sturdy and functional rather than lightweight and flexible.