How to set the code lockWe put an instruction manual inside our package.If you cannot open the code lock or forgot your password, Thoughtful Design: we adopted eye protection paper to better protect your child's eyesight. refillable design by using waterproof leather which can be removed for replacement. each diary has inner pockets on the first and last pages where you can put some stickers or postcards.The amount of paper: 192 pages/96 sheets;Paper size/Line spacing: 8.5 *5.7 inches/ 0.35inchesLockable password design :Creative metal password lock,adding a trace of fashion sense 0-9 Three-digit combination, hundreds of password combination, a good degree of confidentialityLocking journal diary:Durable for travel or personal secret diary .a must-have item for a diary, travel journal, poetry work, creative writing, listing ideas, making sketches & drawings.