Natural Rubber Shoe and Boot Protective Cover. These are a great low cost alternative to what is typically called the hazmat or nuke boot and the I.S.A HighTop. Great for many applications including food processing plant workers, general industrial and manufacturing workers, plant visitors and inspectors, environmental cleanup projects, chemical protection, home maintenance or service repair workers like electricians, plumbers and air conditioning and heating technicians or when washing cars, mowing the lawn.