Muscle... by the way, the previous owner probably had the covers put on because most of us had issues with the door handles. They would split in the back and would become dangerous (like a razor). Some people have cut their fingers on them. I had mine replaced at the dealership under warranty a long time ago.

Just an FYI in case you weren't aware of the reasoning behind it. The previous owners intention was good... just didn't think it through properly.