Notebook Lineup BS Light (Black) A5 Cover Only

“BS Light”
Easy-to-use monthly notebook notebook
For “day-free”
can be worn snugly,
It is a notebook cover with excellent portability.

Prevents the notebook from opening on its own in a bag, etc.
Popular Hobonichi Techo Cover Features
“Butterfly stopper”.
“BS” in the name is
About this “butterfly stopper”
I mean

The notebook body that can be attached is
“day-free (Cousin size/A5)”
Looking from the top, it looks like this.
Thin and smart to carry around.