The batting is the Insul-Bright needled insulated lining and Warm & Natural Batting. I bought them from Joann Fabrics. Decor Top Fabric, Insul-Bright (Shiny side of your Insul-bright should always face the hot item), Warm & Natural Cotton Batting, and Backing fabric. (If you are making oven mitts you will have to do the same to the back side of the mitt.)