The WeatherTech 00 BMW 323i Cargo Liners - Black are made from a heavy-duty, durable material that is designed to protect the interior of your vehicle. The cargo liners are custom-fit to the exact specifications of your model, providing a snug fit and maximum protection. The textured surface helps keep items from sliding around, while the raised lip helps contain spills and debris. These cargo liners are easy to install and remove, and are backed by a limited lifetime warranty.