Hi.. I had several polyester knit quilt tops that were made when those knit were so popular. One thing about them, that fabric is indestrucible.. I got some light weight single knit (also poly) and backed the quilts with that.. Then I just tied the ones I had.. I tied them close together. I keep one in the back of my car to use however it needs to be used, for a picnic, a stadium blanket, to lay on the ground when there is car trouble.. If it gets dirty, it goes in the washer and dryer.. I love those silly quilts!