Double-ring Binder A4 5mm BASIS-24-03
Size: 210 × 297 mm
Price: 487 YEN (TAX IN)
"etranger di costarica"
It sounds like an imported brand.
However, their main office is in Hiroshima, Japan.
Their double-ring binders are in harmony
with any pens and erasers.
(Gel ink seems kind of incompatible)
Graph paper helps us draw a picture
or write letters very much.
"Double-ring" makes you easy to get rid of
needless pages and reedit a structure.
The only drawback to these notebooks
is being kind of heavy.
So some female users might feel difficult
carrying one of these...
Anyway, you should take a look once
If you want a graph paper notebook.