Acid resistant
"I am a Raymond Forklift technician. I work in the power solutions department, which means my job is to fix forklift batteries and battery chargers. I needed pants with a high polyester percentage to resist the sulfuric acid. These pants fit a little snugh in the waste so I would recommend buying 1 size larger than what you actually are, but they are comfortable and I enjoy them. Not exactly sure why the right side rear pocket has 2 pockets but that's whatever. As for longevity, not sure yet, only had them a month so far. Really like these pants so far."