As far as I can tell from the description, it is not clear whether this model is a TraficGard. There is also nothing about a size M. According to the description, it measures 110 cm x 75 cm. In order to find out whether it fits in your car, all you have to do is measure it. For this you can use a double metre. If you don't have one, you can buy one here at Galaxus. Just copy the following text into the search bar: Rieffel Doppelmeter Holz 2m. How to use a double metre should hopefully be clear to everyone. If this is not the case, you can find a video tutorial on Youtube.