XFIRE Cargo Pants may be the best fitting, most comfortable fire resistant pants you can buy. Constructed from 7.5 -8oz durable FR 100% cotton woven fabric that is inherently flame resistant the gives ARC rating 8.9 CAL/CM2 - HRC 2 that is certified to meet or exceed NFPA 1975FR, 70E, & 2112 standards. Designed with an engineered dimensional fit that remains comfortable no matter what the job asks. With features like a comfortable slider waistband, deep cargo pockets, easy access DropN pocket and reinforced knees that are designed with special pockets for inserting pads, the pants cannot be beat for utility or comfort.