BookFactory Black Lab Notebook - 168 Pages (.25" Grid Format), 8 7/8" x 11 1/4", Black Cover, Smyth Sewn Hardbound (EPRIL-168-LGS-LKT1) Hardbound book with durably coated, Black 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) grid format Page Dimensions: 8 7/8" x 11 1/4" LABORATORY NOTEBOOK