I use Pellon Natures Touch that is ordered from Walmart. Comes in a bolt that is 96 x 9 yards. 90% cotton and 10% Olefin and is a natural cotton/scrim. A bit thinner than W&N and I was worried about that at first, but after using a bolt of it I find that once I was the quilts before giving to Project Linus they are just as fine. I'll be placing another order this week.