I've used the Insul Brite in potholders, but also a layer of W&N. On a quilting show, or perhaps something I read that by adding a layer of W&N to the potholder, it wicks away the moisture from the hot item. I have also used 2 layers of W&N with the grey fabric used for ironing board covers on the back (I can't remember what it's called, but the pot holders worked well and held up pretty well.) My DIL wanted a runner for their sideboard in their kitchen made with the Insul-Brite because their coffee pot produced so much heat it was damaging the top of the sideboard.