Each notebook contains 160 ruled pages of 90 gsm.The paper is smooth and easy to write on using any writing instrument, including fountain pens, without ink penetration.The cover is made from 2mm-thick kraft cardstock.The books are spiral-bound, which allows you to open them flat on any surface.These aesthetically pleasing notebooks come in timeless designs and pleasing colors.Dimensions: A5 size (21.2 x 16 x 3.5 CM); No. of pages: 160 (80 sheets)