Material: PU, Daolin paper inner core 2. Number of sheets: 96 sheets/book 3. Size: A5 buckle style is about 12x21.8 cm/book, A5 window grille magnetic buckle style is about 14.8x21.8 cm/book, B5 simple style is about 19.1x26.2 Cm/book, B5 window grille with magnetic buckle, about 19.6x26.8 cm/book 4. Purpose: notebook, notebook, etc. 5. Features: ribbon bookmarks, easy to mark and find, durable, wood paper core, thick design, double-sided writing, lock thread binding, firm and reliable, retro color-changing fabric, comfortable hand feel, clear texture, double edging design , With PU pen socket 6. Description: each book comes with a pen (not with the window grille and magnetic buckle models)