Corsair ships the Obsidian 750D in the same plain cardboard package as most of their other cases. The front has an image of the enclosure along with its model name, while the rear holds a blow-up diagram and some promotional text. Both side panels hold identical texts and images. There are also some carrying holes for ease of transportation.
The Obsidian 750D is held in place by two fairly sturdy Styrofoam spacers. A plastic bag has been applied to protect the case from fingerprints and scratches.
You will get all-black screws, neatly sorted in separate bags, a single motherboard stand-off, and a few zip ties. There is also a fairly detailed manual, which comes in a plastic bag as well.