The Mnemosyne N188A Japanese stitch bound note pad features durable, heavy card stock front cover and back cover, square corners, and is stitch bound with the cover held by two staples. The N188A is A5 size and measures 5.8 inches wide by 8.9 inches high and has 70 sheets of perforated, fountain pen friendly 5 mm grided paper. Each page has a "Date/No." and a "Title" block at the top of the page. The paper is 80 GSM. The paper is heavy enough to take most fountain pen inks without bleed-through and is properly sized for water-based inks so that no feathering occurs. Each Mnemosyne pad has a yellow blotter page inside the front cover. Works equally well with ballpens, roller ball pens, and pencils.?