I've been an electronics engineer for 35 years and use this on my desk every day. That thing is basically impossible to melt with a soldering iron. As a test I put a 300c soldering iron on it for 10 seconds and there was absolutely no mark on it. I'm also glad it's not anti-static, besides that silicone doesn't even conduct static electricity. Typically, anti-static mats are conductive at very high voltages to dissipate static electricity through the ground wire. Not this thing. The only problem I have is that it has too many tiny screw holders. I don't use them myself, so they fill up with soldering tips and scrap solder wicks. It's easy to clean if you have a decent bench where you can just shake it out and rub it down with rubbing alcohol, but I'm not good at it. I usually push my tools aside and use a clean brush to clean them, but both plus and minus everything seems to stick to it except the solder.