Any suggestions on good trunk area protection? The MB mat doesn't look like it covers the entire trunk area and it just a big square. Weather tech doesn't appear to offer a specific mat for the w222. They list a universal fit mat which I'm not crazy about. I don't plan to haul bags of mulch back there but the weekly trips in / out of the airport track a ton of muck in on the suitcase wheels and if the wife wants to pick up flowers while we are out I don't want to worry about them spilling over in the trunk.

Thanks in advance for your suggestions.