The Pokémon Destined Rivals Elite Trainer Box (ETB) is a factory-sealed collectible card game product featuring the character Mewtwo. This box contains standard-sized cards made of card stock. It is part of the Destined Rivals set for the Pokémon TCG game, perfect for Pokémon events. This Elite Trainer Box is a must-have for collectors and fans of the Pokémon franchise.