This case is similar in design to our chubby quad CD case, only substituting two-disc Smartrays for standard jewel case trays to hold six CDs in the same space. These trays have hubs on both sides and are hinged at the spine to allow access to the discs on the back side. Insert and booklet space is not affected. We want your jewel cases to arrive undamaged so we ship our case-quantity jewel cases double-boxed with styrofoam pads and plenty of air cells for cushioning. These cases ship unassembled, with cases and trays packaged separately.