I bought it by the yard at Hancock's Fabric, it's very lightweight with the grid printed on it. Not stiff at all. It's perfect for watercolor design quilts. It's so cheap to buy I used it to back my tissue patterns that tear so easy. I think I paid about $1 a yard at one of the fabric sales. If you have trouble sewing big squares together cut freezer paper to the size square you want, iron fabric to the paper and then sew the paper backed fabric together. The fabric will stay in place and you will have perfect squares. It will take more time to remove the paper but give you a head start to get the accuracy you want.