Large Capacity: TopLoaders card sleeve size: External size 3.0" x 4.0" x 2.6", internal size 2.6" x 3.8" x 3.34" interior free space. Advanced Storage: Stylish, unique and designed specifically for card collectors. Suitable for various trading cards and sports cards. Waterproof and Airtight Design: Innovative mtg card box with a metal reinforced lock to keep out air and moisture. Durable & Made to Last: Made of 100% natural bamboo and sealed with vegetable oil, water resistant and heat resistant. No painting, polishing, or painting is required. Good for the environment: Wooden is a sustainable material that is easy to regenerate, so it does not pose a hazard to the Earth. No chemicals used in growth or production make these trading card cases safer and better protect your precious trading card.