I love Soft and Stable and have made quilted slippers using it. It comes in various sizes so plan carefully how much you will need as it is rather pricey. I got mine on Amazon which carries all the different size rolls. I have also found it in some quilt shops. It gives more body than fusible fleece and a lot more structure than batting. It does not have a grain to it so you can cut your pieces out in the least wasteful position. I have never joined it so don't know how that would work. I have also used it for place mats when I wanted extra body.