Pokemon TCG: Collector Chest (Fall 2018) - Rules of Play says:

Battle on the go with the Pokémon TCG: Collector Chest! This sturdy metal case contains more than a dozen Pokémon goodies, including awesome foil promo cards featuring the Legendary Kanto trio Articuno, Zapdos, and Moltres, and other cool stuff not found anywhere else. The Collector Chest includes a notepad and pencils so you can take notes in your next big match! Wherever you go, you'll be ready to battle with the Pokémon TCG: Collector Chest.