These work jeans by Wrangler are flame resistant! They are made with 100% cotton and prewashed 14.7 ounce denim. These Wrangler work jeans are heavy duty because they are made with Nomex thread tape and seams for extra strength. They have authentic five pocket styling with the back pockets that have the Wrangler "W" stitching and Wrangler patch on the right pocket. These FR jeans are boot cut that made to fit any pair of work boots. These jeans are made for the work field...they are compliant with the most updated standards in work wear and are made by a one of the best western brands...Wrangler. Since these jeans are not just flame resistant, but water resistant as well, they are made for guys who work in all industries that need top safety and protection on the job!