This is a cassette tape-shaped card file. It's labeled "Cassette Card File" and is a card storage product designed to resemble a cassette tape. It has built-in pockets for storing cards and is used to organize and store trading cards, business cards, etc. Many are made of durable and waterproof materials (e.g., PP material), which helps protect cards from dirt and scratches. It also has a stylish design, making it visually appealing. You can use it by inserting card holders. Since the original card holder is missing, I've marked it as having scratches and dirt, but please insert a card holder and enjoy organizing your cards. Please consider this item with the understanding that it is a home-stored item. The size is the same as a real cassette tape.