I back all of my lap quilts, usually 60x80 with fleece and also use batting. I do SID or decorative stitching and pin down well. I have been doing this for 3>4 years and they wash and wear just great. My grandkids take them when they ride buses to sports events and living in North Dakota, those buses are cold in the winter time. I wouldn't do a quilt any other way. I am going to patchwork some of my scrappy fleece pieces and use as a backing for a lap quilt for my DH. One of the things on my bucket list.