This bib overall isn't just protective against electric arcs and flash fires, it also has durable 10-ounce Moda-Quilt® lining to keep out the cold. Made of rugged, 13-ounce, 100% cotton duck, it features a high back with FR elastic suspenders and high-temp nylon center-release buckles. The chap-style double front was designed for durability and increased thermal performance. The zip-to-mid-thigh brass zippers have Nomex® zipper tape, a protective flap and an arc-resistant snap closure. We also placed Nomex® zipper tape along the brass zipper fly. There are FR melamine waist buttons, and weÆve included a hammer loop as well as multiple tool and utility pockets.For over 115 years, Carhartt has manufactured premium workwear known for exceptional durability, comfort, quality of construction, and fit that you can feel in the fabrics and see in the performance.