Felt Lining

So my friend has a car that is having the felt lining in the interior that is wearing down. The car is fairly old it is a 2003 car, but it is still a little early for the felt lining to be tearing down like that. I have told him to look into it to get it fixed. It shouldn't cost very much and probably can be done with a very small amount of labor. Can anyone suggest a place for him to get this problem fixed?