Made of 13 oz., flame-resistant 100% cotton duck. Features a high back with flame-resistant elastic suspenders, high-temperature nylon center-release buckles and chap-style double front for durability. Unlined overalls have multiple tool and utility pockets, hammer loop, ankle-to-mid-thigh brass leg zippers with Nomex® zipper tape, flame-resistant melamine button at waist, protective flaps and arc-resistant snap closures. Arc rating: 16 cal/cm², CAT2. NFPA 70E compliant.