The designers create the interior design of all model series of Mercedes-Benz passenger cars, which also includes the seats, doors, roof liners and dashboard with controls. For each task, they require a variety of specialists, such as automotive, product, textile and fashion designers. Specialists in surface finish create both the colours and all the material qualities for the interior. From grained leather to metal-weaves to the lustre of each individual surface, every detail is carefully selected and coordinated. Although it is often the finest of nuances that are decisive, the form and design idiom of each model is constantly redefined.