I used w layers of insulbrite with no batting in both pot holders and mitts. The insulation properties seem fine, the bulk is not very thick which I find a plus to use. The less bulk made the mitt easier to turn when I was making them. I was very pleased with the result. One set of mitts went to my fireman SIL who thought their safety factor was acceptable and he is REALLY picky. For people
"who have everything" customized hot pads seem to me to be a very good choice. I haven't seen any embroidered hotpads, hotpads with sport team logos, etc or other very personalized items on them.