most likely squirrelsI might be wrong, but it kind of looks like some rodents have been chewing away at the fabric.
I think both parts can probably be replaced. You can stop by a local dealer to get actual part numbers and the costs that they would charge you to buy and install them, and then you can search for those part numbers online to see if you can get a better deal. They look like they would be fairly simple to replace, just pop out a few buttons/clips and they should come right off.