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. Diameter: Approximately 7cm Gusset: Approximately 3cm Although I make them carefully, there may be slight distortions or misalignments. Please understand that this is a handmade item by an amateur. For an additional 100 yen, I will attach a cute heart-shaped lobster clasp as shown in photo 5. I do not have any pets or smoke. I will pack the item with the zipper open. Thank you for your understanding. I will discount 100 yen for combined shipping. Thank you very much. m(_ _)m