Back in the old days, people never used insulbrite when they made potholders. Most of the ones that I have taken apart only had a thick layer of cotton batting. I can't really see where it is necessary in order to make a successful potholder. After all, I usually just grab a dishtowel when I remove something from the oven. And, a lot of times, I set a hot pan on a folded dish towel. I can see where it would be necessary when making the casserole cozies to help hold the heat in. But, is it really necessary when just making a simple potholder? I'm planning on making some for Christmas gifts and for Bingo Prizes at our Senior Center and I want to make sure I make them right. What is your line of thinking on this?