CD cases are protective containers designed to hold and safeguard compact discs, commonly known as 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 or labels. The interior usually has a hub that securely holds the CD in place, preventing scratches and damage. These cases can vary in design, including single, double, or multi-disc formats. Some may also include additional features like booklets or inserts for liner notes. CD cases are essential for music collectors and anyone who wants to keep their CDs in good condition.