This is a Louis Vuitton notebook cover. You can use it with your own notebook, etc. Size: Height: Approximately 16cm Width: Approximately 9cm Open width: Approximately 18cm Returns are not accepted to prevent swapping and trouble. Thank you for your understanding. I purchased this for work for 12,000 yen here the other day (April 2025), but it was not what I expected, so I will sell it. I received it in near-new condition and it is still unused. Thank you.