oh my goodness....I CAN JUST SEE THE QUILT POLICE COMMISSIONER QUAKING IN HER SHOES...A SHEET FOR A QUILT BACK ???
sorry, had to put that in so many people get REALLY UPSET when ever this comes up. my philosophy? use what you want to ...just get a sheet that's larger than your quilt top. do remember, poly/cotton blends are harder to quilt (by hand next to impossible) but it can certainly be done --use a sharp needle---they wear like iron and will last a long time.