This fabric came with a lot of flaws/dropped stitches and holes in the selvages. I havent seen this before in all my years of buying fabric. In addition to serging the raw edges before prewashing, I also sewed a line of stitching down each selvage to the inside of the flaws prior to prewashing. They did not spread or get worse after washing, and this fabric washed beautifully. I am a little concerned that I may have gotten a bad piece because most of the other reviews are so positive. Hopefully it sews up ok!