The fenders and mirrors were treated with SunTek Ultra. Like Ultra Defense this product has 4 layers and is 8 mills thick. First is the self-healing top coat. It adds protection from swirl marks and scratches. The second layer is a Hydrophobic Treatment to add to water beading properties to prevent contaminates from sticking to the protective surface. Next is the Impact Absorbing Polyurethane, this is the layer that takes it on the chin when unavoidably an object hits your vehicles paint. There’s additives in this layer that prevents yellowing of the product while still being 100% transparent to allow your vehicles finish to shine through. Finally is the adhesive layer that allows the product to stay bonded to the vehicle surface and also removed safely if required. Both SunTek Ultra and Ultra Defense are warrantied for 10 years against discoloration, cracking and peeling.