Spiral Ring Notebook B6 size
Watercolor Paper 20 sheets (40 sides)
Manufactured by the Traveler's Company
From their site:
This is a notebook using watercolor paper that is strong against water and has good coloring.
The slightly thicker watercolor paper used for anime background paintings is also recommended for sketching with pencils and pens, as well as collages of photos and tickets, as well as watercolors.
The cover with a simple and natural texture is made of durable impregnated paper that contains resin. The icon of the swan which imaged the white paper of the watercolor paper casually is engraved.