Sun & Moon Burning Shadows Elite Trainer Box: PokemonTCG - Rules of Play says:

Step out of the darkness and kindle a new path to victory with the Pokémon TCG: Sun & Moon—Burning Shadows Elite Trainer Box. You'll find everything you need to compete in this extensive collection, including card sleeves featuring the Legendary Pokémon Necrozma, high-quality dice and condition markers, and more. Plus, get tips for how to put cards from the Sun & Moon—Burning Shadows expansion to use with the special player's guide. And everything fits in the collector's box, making it easy for you to travel to battle with your friends or to your next big competition. Blaze ahead with the Pokémon TCG: Sun & Moon—Burning Shadows Elite Trainer Box!