The surface of the rubber mat has been reproduced with an aluminum finish. Often, it looks like aluminum step boards, but aluminum boards do not have a shine like plating and will corrode over time, but this product comes with a matte of each color (except black), so it will have a different gloss and shine even for a long time. Pre-cut to fit factory step boards Embossed back In addition, since the base material is rubber, there is no gap or distortion compared to aluminum step boards on the market, and it also has an excellent fit.