The product is a US seller offering 2 Yu-Gi-Oh! Korean Invasion of Chaos Labyrinth of Nightmare 2 Booster Boxes. Each booster box contains 40 packs with 5 cards each, all in standard size. Manufactured in 2011 in Korea by Daewon, these boxes feature cards from the Labyrinth of Nightmare set in the Yu-Gi-Oh! franchise. This collection is suitable for ages 6 and up and is a must-have for collectors and fans of the game looking to enhance their decks with Korean cards.