I've got a quilt I'm working on and I am using a sheet in it. It's a Ralph Lauren 100% cotton sheet that I bought some time ago. I actually bought 2 of them - both king flats. I am using it as backing fabric and I have made some of the quilt blocks out of it too. It sews really nice as far as the quilt blocks go. I have not tried any quilting yet but I don't expect any problems. It was just too good of a match to my other fabrics to pass up. It's not a solid color. It's a navy blue and white check.