Whitman Coin Folders are best known as the blue coin folders for their timeless design. These folders open to lay completely flat so you can see the entire collection at once and include historical information on the specific design. Great for any collector! You simply press your coins into the open ports and they lock into place. These folders do not have any slides to cover the ports for protection. If you are looking for the albums with clear slides you will want to view the Whitman Coin Albums Category.