When I use good quality quilting cotton, I use batting and usually quilt it to give it some body. Most of my totes/purses are made with home dec fabric.....I love the durability.....I use decor bond for those bags...I tried interlining as described in Brett's class, but didn't like the outcome. Too thick and bulky. I will sometimes interface the lining as well with a light weight fusible, again, just to give some structure and durability. I do donate some bags for fundraisers....for the local school and during October for breast cancer awareness.