Pellon is an interfacing/stiffener that is used in tote bags, purses and the like to give the fabric a lot of body. Personally for tote bags and purses I like using Buckram better. I use a light weight Heat Bond to adhere it to my fabric. Buckram is a drapery stiffener that is very nice for bags. I get it at Mary Jo's in Gastonia, NC. I can get the 20" width there.