I used poster board from the Dollar Tree store...actually bought a whole box at one time (has, I dunno - hundred maybe) - I then cut them to the two sizes I needed for the width of my cabinets - the llarger ones are for large amounts of fabric, and the smaller ones are from a yard up to about 3 yards.....I LOVE the way they are now, like books at the library shelf......I can get out what I need and not disturb everything else......when they were staacked, the one I wanted was always on the bottom and it messed up the whole stack to get it out.....