New and unused Alienware Orion Backpack for sale. It's a gigantic, spacious and relatively comfortable backpack, but I really would prefer using a briefcase to carry my huge-ass laptop.
Capable of holding two laptops. Has tons of pockets, including three pen holders and a detachable cell phone case. Made of ballistic nylon. All tags still attached.
20" x 15.5" x 8"
More information from Newegg.