The set of six is inspired by clandestine operations with a stealthy matte grey surface and ciphered black metallic foil lettering. Inside each notebook, there are 60 pages of high-quality paper with light gray dot-graphs for cracking passwords and solving world-saving puzzles. (Or you know, just jotting down notes in a meeting.) Each example also comes with a cross-reference matrix of codes on the back cover along with tips and tricks on writing your own covert messages.
Q-Branch has it available for you here, so get moving and acquire asap.