The product is a sealed Pokémon TCG set featuring Mewtwo, Mew, and Mew ex cards from the Scarlet & Violet UPC Promo Cards set. These cards are manufactured by The Pokémon Company and illustrated by famous artists such as Kouki Saitou and Bun Toujo. The cards have a holo finish and are considered rare promo cards. The set includes cards with the card numbers 052, 053, and 205, making it a valuable addition to any Pokémon TCG collection.