Dear Tamago, Thank you very much! Thank you for viewing my product out of many others! (´▽｀) This is a large postcard sold at the Yuko Higuchi exhibition held in Korea from October 3, 2024 to January 22, 2025. It's made of sturdy, durable material and has a very high-quality feel. Size: 12cm x 18cm As a bonus, I will include a pamphlet from the exhibition. This is also a thick, high-quality type. Please understand that this is just a bonus. I will protect it from water damage and ship it via Yu-Packet Post Mini m(*_ _)m