So I wasn't working on the Jeep when it occurred, but the damage I sustained well warrants the warning to others. Athletic shirts- Like Underarmor, Nike, etc are designed to wick away moisture from your body and hold that moisture within the material. Same can be said when your working with chemicals that release vapors into the air. These shirts will wick away that vapor and lock it into the shirt just like moisture. My accident- I was wearing one of these shirts while working with floor stripper. It was during the winter so I was indoors with the doors and windows closed, and I was working with a relatively small amount of the chemical. (Stripping a kitchen floor 10 by 10) My shirt wicked away the vapors from the floor stripper without my knowledge. 4 hours later I was building a fire in my fireplace and when I went to light it . . . . poof! I was consumed by flames as if I was standing in wet gasoline. (No kidding) My shirt caught fire and I was completely engulfed by flame within half a second. End result, I went to the ER and then transferred to a local burn unit with 2nd/3rd degree burns over 22% of my upper body. I spent 3 weeks and underwent several surgeries to repair the damage. The burn unit folks said they see about one of these a month, involving athletic shirts and working with strong chemicals like floor and paint strippers. Just passing along the info I wish I had at the time. Hand got burnt trying to pull the athletic shirt off my body when it caught faire.