I have some double knit quilts my grandmother pieced over 30 years ago that are just like they were when she pieced and have been used practically daily for tents, putting on the floor for picnics with the grandchildren and keeping warm, which they do an excellent job. I tie tacked all of them, some with sheets for backing, some with quilted fabric backing and some with double knit backing. They are great, would not trade them for anything.