Using this Noble WRX Fender Emblem Set is a breeze. First, make sure the surface where you'll install the emblems on your 2015 - 2021 Subaru WRX is clean and dry. Since the 3M adhesive is pre - installed, just peel off the backing and carefully stick the emblems in the desired position. Press firmly to ensure good adhesion. As for maintenance, you can clean the emblems with a mild soap and water solution. Avoid using abrasive cleaners that might scratch the surface. When it comes to storage, keep them in a cool, dry place if you're not using them right away. Also, be careful during installation to avoid any air bubbles under the emblems.