-Hydrophobic film prevents the accumulation of water vapor and moisture on the mirror -Allows water to drain from the mirror surface during rainfall, significantly improving visibility INSTALLATION INSTRUCTIONS: clean the mirror with a moistened cloth no. 1 Drying with napkin no. 2 Remove the dust with a cloth or with the "Dust-absorber" sticker. Attach the film with layer 1 towards the mirror, you can fix this position from above with a control sticker. gently peel off piece #1. Apply the film while removing the rest of the protection to prevent contamination, air bubbles are best removed during the application process with the supplied spatula. Gently peel off mask layer 2. -135x95mm - 2 pcs