I've made several Bow Tucks and I kinda like having the fleece on both the inner and outer layer....To me, it gives the bag more body, but I can see not having it on the lining, but be sure there is a sturdy support in the bottom. The very first one I made, i used a heavyduty fleece and had a difficult time with it then went to the Pellon as instructed....used my workhorse machine and a "sharp" needle to get through all the layers and it worked like a charm....esp when topstitching at the end!!