• DeckSlimmer is the world's first innovative structure deck case ever made TOYGER spent half a year developing something universally loved by everyone, regardless of the card game you play, gender, age or anything else A large number of cards that were supposed to be inserted seem to magically become thinner Patented (Investigation agency: Japan Patent Office, Investigation date and year: August 18, 2023, Patent No. 7333896) • External dimensions (when closed): Length approx. 8.0 inches (20.3 cm), Height approx. 4.0 inches (10.2 cm), Thickness approx. 2.1 inches (5.4 cm) (measured at the base). Maximum size of storable cards (or sleeves): Length approx. 3.7 inches (9.5 cm), Width approx. 2.9 inches (7.4 cm) • Thickness of the card storage compartment when closed = thickness of the stack of cards that can be stored: approx. 7.8 cm (the number of cards that can be stored does not vary depending on the size of the cards) • Storage Capacity: Approx. 270 sheets (without sleeves); Approx. 140 sheets (single sleeve); Approx. 120 sheets (double sleeves); Approx. 100 sheets (triple sleeves) • Compatible Card Games: Almost any card game on the market (Yu-Gi-Oh!, Pokémon Trading Card Game, Duel Masters, Magic: The Gathering, Weiss Schwarz, Vanguard, WIXOSS, Battle Spirits, Buddyfight, Dragon Ball Heroes, etc.)