7-ounce 88% cotton 12% nylon FR twill - Meets the performance requirements of NFPA 70E/ASTM F1506 - UL classified to NFPA 2112 - Two-way front zipper with storm flap and high temperature-resistant FR zipper tape - Two secure chest pockets with flaps and hook & loop closure Comfort flex waistband - Back yoke with pleats - Multiple utility pockets - Adjustable sleeve cuff with snap closure - Ankle-to-knee leg opening with snap closure fits over boots Two side-entry pass-through pockets with snap closures - Carhartt FR and NFPA 2112/CAT 2 labels sewn on left-chest pocket - Two chest flap pockets