One time at CGC we got a package that had books wrapped inside peed on sweat pants. one Was Daredevil 168 no kidding. Smelled a little like vinegar too. I opened the box and took out the pants with salad tongs. (essential grading divination tool) I was all running around up and down the hall with them (pants) I think that's what prompted my article on how to ship your comics.
These are indicators for the USPS to PLEASE "KICK ME"
Our local posties tell me that when you label something "fragile" or "do not bend" it tells the other posties not to run the boxes through the automated machines, where most of the postal damage comes from, but instead to handle by hand.
JS comics ships all their comics in what I would call "undersized" boxes with orange "fragile" labels. I get a box from them weekly, and have never seen so much as a dent in those boxes, despite shipping media mail across the country.
_________________________ My main ride is a dateless nerd wagon.