Box Set Packaging is generally made with a rigid core material called chipboard. The chipboard is wrapped with either a printed paper wrap which is laminated, or a material like linen or faux leather. The boxes can be made in a any size or shape.
See Also Linen and Leather Wraps
Boxes can be functionally described as having a hinged lid, or as being two-pieces with a detached lid. We’ve made hinged and 2 piece boxes for a standard cd 5inch height, dvd height, educational workbook height, and vinyl record height. The depth can be what ever you need it to be to hold the contents. The shape can be non-traditional as well.
Kraft paper (available black or tan) can be used to line the inside of the book. It is left unprinted. If you want to print the inside of the book, that is ok to do as well. A printed wrap can be glued across the inside. Kraft paper also makes for a very nice glued on sleeve.
See also Kraft Paper