Nostalgia
It comes in a carton sleeve, it's a huge plastic box, with 3 CDs inside, the first 2 contain all the Let's Go soundtracks and even small tones, like when you're healing your Pokemon at the Pokemon Center, and the last one contains everything from the original Pokemon Yellow, it has a different art on the CD and it's nice. There's a booklet that contains artworks and comments from art people about what should change in these locations and building, unfortunately, all in Japanese so I can't really understand.