CarharttĀ® Made of a 9-ounce, flame-resistant 100% cotton twill, it features two chest pockets with flaps, two pass-through pockets, left-leg utility band, spread collar, multiple tool and utility pockets, pleated elbows and bi-swing back for comfort and brass front zipper tape and inside and outside flaps. Leg opening fits over boots for easy on and off. NFPA 70 E and NFPA 2112 compliant.