This is a notebook refill that features pages that are thin and light with a weight of 47gsm. 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, so feel free to grab your favorite fountain pen. You will be able to see the ghost writing from the previous page, but it will not decrease the readability of your notations. The color of the paper is white.