The Sysdmno Trading Card Storage Magnetic Closure Card Box is a 3 pack designed to store up to 800 standard-sized baseball cards. Made of sturdy cardboard with a sleek black color, this card storage box features a single compartment with a magnetic closure for secure storage. With waterproof and magnetic closure features, this card box from Sysdmno is a practical and stylish solution for organizing and protecting your baseball card collection.