The Leuchtturm1917 Softcover Notebook in Aquamarine measures 5.75 x 8.25 inches and features 121 numbered pages of ivory lined acid-free 80gsm paper. The lines are spaced 6mm apart. Leuchtturm1917 medium sized notebook includes an index for easy organization, 8 perforated and detachable sheets, a page marker, a gusseted pocket in the back, and an elastic closure. Filing stickers are also included to help you make the most of your notebook.