Protects the sills from road debris. Rockers catch everything the tires kick sideways. This Defense+ Rocker Panel Kit is pre-cut for the 2017-2023 Model 3, so it lays down without trimming. 8 mil Defense+ film: self-healing, hydrophobic, 10-year warranty. Matte gives the panel a flat, non-reflective finish. It won't match gloss paint, so r