Blu-ray cases are rectangular plastic containers designed to hold and protect Blu-ray discs, which are a type of optical disc used for high-definition video and data storage.

The cases are usually made of clear or translucent plastic, allowing users to see the disc inside. The front cover of the case typically features the title of the movie or TV show and any relevant artwork or images, while the back cover provides information about the disc's contents, such as the cast and crew, special features, and technical specifications.

Overall, Blu-ray cases are designed to provide a durable and convenient way to store and access high-quality video content, while also providing valuable information and additional features for users.