This is a notebook refill that uses papers that are thin and light. This allows the refill to have twice as much pages (128 pages) compared to the usual refill, and is suitable for people who write a lot. The paper is thin and light, but is suitable for writing, so please feel free to use your favorite fountain pen. Blank, 128 pages, lightweight paper (Saddle stitched: 2 staples) Package size: H210 x W110 x D4 mm Weight: 92 g (w/o package: 90 g) Made in Japan