CD cases are protective containers designed to hold and safeguard compact discs (CDs). They typically come in a standard size and are made from plastic, featuring a clear outer cover that allows for the display of album artwork and track listings. The interior usually has a hub to secure the CD in place, preventing scratches and damage. These cases can vary in design, including jewel cases, slim cases, and digipaks. While jewel cases are the most common, slim cases are thinner and more lightweight, making them ideal for storage. Digipaks, on the other hand, are made from cardboard and often feature unique artwork, providing a more artistic presentation.