Certified to NFPA 1991 for chemical and hazmat cleanup, emergency response, and domestic preparedness. Made of special polymer material, this comfortable boot meets the protective footwear chemical permeation requirements of NFPA 1991 Standard on Vapor-Protective Ensembles for Hazardous Materials Emergencies. The HazProof boot has also been tested to Military Standard 282 and will provide protection against certain chemical warfare blister and nerve agents! Ideal Applications: Chemical and Hazmat Cleanup. Chemical Resistance: Hazardous Waste. See ASTM F1001 Listing & MIL-STD-282 Listing.