A roof liner is the material that covers the inside of the roof in a car or building. It helps to provide insulation, reduce noise, and give a finished look to the interior. Full definition
It's complemented with piano black trim, aluminium pedals, a black roof liner and red seat belts. (evo.co.uk)
The package will be offered with BMW Individual roof liner in Anthracite, interior trim in Fine Brushed Aluminum, an M gear lever knob and a stainless steel inlay in the luggage compartment loading sill. (topspeed.com)
This recess is referenced stylistically inside the car, the anthracite - coloured Alcantara roof liner gaining a central section in leather. (motor-prime.com)