Keep your index cards organized and handy with the Oxford OXF40591 Index Card Storage Boxes 1 Each Black White. It s made of moisture-resistant cover material over heavy binder board for years of dependable use. This index card storage box has a liftoff lid that offers full access to its content. It includes an adjustable steel follower block that makes sure your index cards stay upright and organized even if the box is not full. This office supply comes with a built-in label holder for quick identification. Choose the right size for your index cards. The Oxford storage box is black and white.