BookFactory Green Lab Notebook - 168 Pages (.25" Ruled Format), 8 7/8" x 11 1/4", Green Imitation Leather Cover, Smyth Sewn Hardbound Laboratory Notebook (LIRPE-168-LLR-A-LGT1) Hardbound book with durably coated, green imitation leather cover and stamped with "LABORATORY NOTEBOOK" Smyth sewn -- book lies flat when open, professionaly bound. Tamper-evident, archival quality, acid-free paper in 1/4" (6 mm) ruled format Page Dimensions: 8 7/8" x 11 1/4" Features a "User Data" page, a "Documentation Guidelines" page, and a "Table of Contents" page