Everything is handmade. I use Frixion pens that disappear with heat and water-erasable chalk pens. If there are any remaining marks, I apologize, but thank you for your understanding. I try to make them carefully, but there may be some slight imperfections such as warping or misalignment. Please understand that these are handmade by an amateur. Height: Approximately 11cm Width: Approximately 20cm No pets or smokers. If you purchase multiple items, I will discount 100 yen. Thank you. m(_ _)m