If I were sending a quilt I would fold it nicely and place it inside a trash bag and then put it in another trash bag "open end" of the first trash bag first. I would also write the info on a piece of fabric and set it in, then dunk it in water just to make sure the ink doesn't run once its dried pin it onto your quilt, then put it in bags with the information on the piece of fabric the first thing they see if they open the bags up. this way if you just use a piece of paper it could rip off while they are trying to go through the box. and if it gets wet it will smudge on paper. If you put it in two different bags it is less likely that it will get something wet on it and ruin it!