The hard clear plastic boxes that you can put over an item to preserve it in it's box? I see them mostly used when you get an item graded, but not sure where I can just buy one myself. I'm specifically looking for a box to house my Nintendo 3DS XL Console's box in to keep it mint. (Sitting on a shelf, don't want it to get dented or anything like that) Does anyone know? I don't even know what they're officially called to be honest. Didn't expect them to be this hard to find.