Lesmart Men’s Fire Retardant JeansNFPA 2112 UL Certified 100% cotton FR Denim Pants. FR work clothing reduces burn injury, provides escape time and increases chances of survival. Designed for Working Men who require safety. YKK zipper flies with button closure. Pre washed for a soft touch and comfort. And the fr pants are perfect for boots with a long shaft. Two needle seam construction makes the fr jeans extra durable while the five pocket design gives you plenty of options for