I bought a whole bolt of muslin that's 90" wide. It was on sale too. I dye fabric so wanted it for that and I also use it for backings. Sometimes when I'm in the middle of a project and I need it, it's nice to be able to just cut what I need and not have to stop to go to the store. I use a lot of black solid fabric, and usually buy 5 yards of that at once. I'd probably be better off if I bought a whole bolt of that when it's on sale too. I have another friend who nearly always buys the whole bolt when she sees a fabric she likes.