I am making pot holders too now. I am using 1 layer of the insul brite sandwhiched between 2 layers of the Quilters Dream low loft cotton batting (its pretty thin). A total of 3 layers of batting. It is thick, but my machine sews those 3 layers and the fabric (for the front and back) just fine. Now this is my first time making pot holders so I am still learning. I will be interested to hear the other responses.