Purchased at Patty's inside Ito-Yokado. It has an official Sanrio KOREA sticker on the back. It's about 3mm thick and puffy. Please check the photos (^^) It will be placed in a plastic bag to prevent water damage and shipped via Yu-packet Post. This is a new, unopened item, but it has been stored at home, so please refrain from purchasing if you are concerned. sanrio Sanrio kuromi Kuromi 3D Puffy Fluffy Stickers