I bought this wand that heats up to 450 degrees for odd jobs that I can't place in my heat press. It's a pain in the *** and I'm pretty sure I don't have finger prints on one hand. And it actually sucks to work with. It was $20 and not worth it. but the upside is that it wouldn't destroy the insulative ability. lol. totally not worth using the wand thing for this job!I suspect that smashing the lid or side of that soft cooler in a 300+ degree heat press will destroy its insulative ability.