Pokemon TCG: 2019 World Championships Decks - Rules of Play says:

Don't miss your chance to play with some of the world's greatest Pokémon Trading Card Game decks! You can experience the thrill of competing like a top Trainer every time you bust out a 2019 Pokémon TCG World Championships Deck. Each deck also comes with a special deck box, a 2019 World Championships pin, and a cool booklet about the event.