SnopakeA3 Plus 30 mm BoxOffice – Electra Assorted [Pack of 5] Storage Case with Carry Handle & Business Card Holder [13812]

It's hard to find decent cases for carrying A3+ (13"x19") sheets.On the plus side, these do the job they were intended to. The carry handle is solid, paperwork is well protected from both impact and splashes, and everything fits well - the fit is loose enough that you have no problem getting stuff in and out, but tight enough that everything is held in place.As for negatives, the build quality is quite low, but for the price that's expected. The side flaps are annoying and will probably break off at some point. The lock at the front is incredibly fiddly and often comes open on its own. As long as you're just using them to transport from A to B and not carrying them around with you all day, it's not too troublesome, though.