Using this Verus windshield washer fluid reservoir cap is a breeze. Just snap it onto your vehicle's washer fluid reservoir. It's designed to fit snugly, just like the factory - installed part. When it comes to color selection, you can pick anodized Red, Blue, or Black according to your preference. For maintenance, simply wipe it with a clean, dry cloth to keep it looking shiny. As it's made of aluminum, avoid using harsh chemicals that could damage the anodized finish. And remember, this cap is specifically designed for 2008 - 2021 Subaru WRX, 2008 - 2021 Subaru STI, 2013 - 2017 Subaru XV Crosstrek, and 2014 - 2018 Subaru Forester, so make sure your vehicle model is within the specified range.