Fun fact - I worked for a bit in Japan for Yupo (the company that makes the paper of the same name and used in this notebook) as part of the project team that was overseeing the construction of the Yupo plant in Virginia. I was originally hired through an English language school on contract to help with editing the English translations of their technical documentation but also got to do some things like porting a sheet temperature simulator from MS-DOS to Windows.

If you want some waterproof notebooks that aren't quite as impractical as those Expedition ones (they always smeared for me too), you might try Rite in the Rain. Had a great time using those over the years.