Nomex® IIIA Insulated bib pants style 225. Shell: 6 oz. 93% Nomex®, 5% Kevlar and 2% Carbon added for improved anti-static performance. Material is inherently flame resistant. Nomex® fabric meets the requirements of: NFPA 2112, NFPA 70E, CGSB 155.20, ASTM F1506, CSA Z462. Insulation: 7 oz. FR modacrylic insulation. Wind and vapour barrier.