Hey there, I wonder if anyone else has this problem. I work at a university where students check out video equipment all the time. We use a lot of Porta Brace cases, and I need to mark them really clearly with certain information. But I've yet to find a paint pen I really like and that won't fade on me. Any tips about a specific make/model of writing instrument that you use for this would be really helpful. I actually wrote in to PortaBRace and asked this same question - never heard back from the bastards. Doesn't have to be portabrace, of course, anything that's good for writing on cordura... Thanks, Mike