Shipping fragile stuff is always risky, because you never know whether the shipping company is going to handle the package with care or mangle it during transit.
And if you're shipping something as fragile as a glass box you'd have to be crazy not to swathe it in bubble wrap to protect it from getting smashed to bits by careless carriers.
Either that or the packages and the glass boxes are being used in an art project, and the shipping damage turns each glass box into a physical representation of the journey it took across the country.
Artist Walea Beshty created laminated glass boxes that fit perfectly inside FedEx shipping boxes then sent them all over the place, pairing each piece with the original shipping box to create pieces like FedEx Large Box, LA to NYC, 2007.
Here's a video of Walea describing the project at the 2008 Whitney Biennial:
-Via Boing Boing