I'm not an expert but I believe this was only available in the M - Active seats which has the "massager" in it. Everything is power including the thigh adjustment and headrest. Heated and cooled and also has an upper back adjustment as well. The best way to tell is by the headrest. You will see its two layers and the pad of the head rest has 3 sections sewn together and has the M in the middle. Available in the White, Black and cinnamon.
