This is a TOEIC book from Korea. It's likely the latest version of the YBM series from Korea. It's for listening. There is still a slight smell of chemicals characteristic of international mail, so please be careful if you have a sensitive nose. No pets, no smoking. There are no markings, but please forgive any oversights as this is a layman's inspection. It will be shipped via Yu-Packet Post in an A4-sized cardboard box.