I use it as a pressing sheet, top and bottom, when working with any fusible product. I'm currently working on a t-shirt quilt; I used up the parchment paper on hand and I picked up a roll of the Reynolds gridded paper at the local Wal-Mart last Friday. I love it!! The possibilities for use are probably limited only by one's imagination! (However, I'm only on my first cup of coffee this morning; my imagination hasn't woken up yet ...)