Haix Airpower XR2 EMS Boots meets ASTM F2413-11 M I/75/ C/75 EH PR and NFPA 1977 these boots are made with Gortex/Crosstech fabric which provides bio-hazard protection these boots are in excellent condition with one exception the zipper pull tab on the left boot is broken off the zipper. Replacement zippers are readily available on the Haix website for purchase because of this the boots have been priced well below there value.