I started wearing them in 2014 when I got my Ford. I should have had them on once, may have saved me from a nasty spider bite. I get the HF 7-mil ones. My tattoo artist wears the 10-mil black ones, required by law. The 7-mil ones are a little longer than the 5-mil ones. They save me a lot of hand scrubbing and I'm not big on the chemicals I'm exposed to. I recall the real old timers I worked with, one looked like that Mr. Dirt character from the commercials. He had dirt embedded all over him, he checked out at age 54, looked like anyone today that is a bad 90, but he drank like a fish and smoked.