Isn't it funny how the pendulum swings and times change? Growing up in the fifties, my mom made my clothes from cotton. Lots of ironing. And quilts were made from the scraps. When polyester came in the 60s, much easier to care for and no ironing! hallelujah !!! And quilts were made from the scraps. Later natural fibers came back, sometimes with something else--poly, linen or rayon. But many of us go to the quilt shop now for 100/ cotton! I don't think I want to quilt with cotton and spandex! I think if I had a double knit quilt, I would back it with flannel , no batting and tie it. JMHO.