I made quilts for my dog's bed using polyester . . . very durable. I made a rag quilt with denim and polyester for the car . . . it was also durable and comes in handy to sit on at the park, to wrap around items I'm moving from place to place and when I had a flat tire, it saved me from getting so dirty. Polyester makes some great outdoor quilts and utility quilts. They're not quilt show quality but many enjoy them.