Carhartt's flame-resistant loose fit midweight canvas jean is great for warmer weather. Made of 8.5-ounce flame-resistant canvas, an 88% cotton / 12% high-tenacity nylon blend, it has a loose seat and thigh and sits slightly below the natural waist for a comfortable fit. The brass zipper fly has Nomex zipper tape and the high-tension waist snap closure is arc resistant. It also has a cell phone pocket, utility pocket, left leg hammer loop, triple-stitched main seams, and a 19-inch leg opening that fits over work boots. Read more about Carhartt's flame-resistant line. Field-Tested 8.5-ounce, midweight, flame-resistant canvas 19-inch leg opening NFPA 70E compliant Click Here For Technical Information