It is ruled paper notebook refill of passport size.
Ruled paper is, because it is familiar borders from student days, it is indeed also many people that this is easy to write most. Toraberazunoto in has adopted a general A ruffled and 6.5mm ruled consisting of B ruled the middle. Since you are using the ease of writing to the original writing paper stuck (MD paper), making it difficult to omission bleeding and back in a fountain pen.
This is a Passport Size passport sized lined notebook. Given our days as a student, we believe this is one of the most familiar notebooks people can use. This refill has lines printed in a 6.5mm interval, and uses Designphil’s original paper (called MD Paper). MD Paper pursues the best feeling of writing, and makes ink hard to stain and sink through the other side of the paper. It goes well with fountain pens as well.
Medium Paper / ruled paper 6.5mm, 64 pages, MD Paper (Stecher binding)
Lined 6.5mm, 64 pages, MD Paper (Saddle Stitched)
H124 x W89 x D4mm
MADE IN JAPAN