More than a pair of work jeans, these flame-resistant pants keep you covered when it really matters. They're made of flame-resistant denim and a cut that fits over most boots. FR (Fire-Resistant): Made of 100% Cotton with fire-resistant and comply with NFPA 2112 standards, effectively protecting workers in high-temperature environments such as welding. Carhartt FR label sewn on back pocket; Carhartt FR and NFPA 2112/CAT 2 label sewn on coin pocket. Condition: Like New Size: 33x32