Keep flames at bay and be seen in high visibility yellow. Both items are UL certified to NFPA 1977 and 1975 Cal Fire approved. 7 oz Sigma 4 Star™ fabric, powered by Nomex. Nomex zipper-fly closure with internal storm flap. Elastic back waistband with 6+1 bar-tack reinforced belt loops. Hook and loop pass through pocket openings. Two welt style seat pockets with integrated overlapping flaps. Articulated, double pleated knees. Imported. Worn by Wildland fire fighters to provide flame resistant protection.