CARHARTT FLAME RESISTANT DENIM DUNGAREE : FRB13Description More than a pair work jeans, these flame resistant dungarees keep you covered when it really matters. The pants are made of flame resistant denim that's garment washed for softness. They have a cut that's full through the seat and thigh, with a straight leg opening that fits over most boots. Features 11. 75 ounce, 100% cotton FR denim Meets the performance requirements of NFPA 70E UL classified to NFPA 2112 Carhartt FR label sewn on back