Using the Lezyne Matrix Air Cage is easy. First, place your Apple AirTag (not included) in the built - in holder. Then, attach the cage to your bike frame using the stainless steel TR25 security bolts that come with a tool bit. Once it's installed, you can use the cage to hold your water bottle as usual. Remember, this cage is designed to work with Apple's AirTag, so make sure your AirTag is paired with your Apple device and the 'FindMy' app is set up correctly. When it comes to maintenance, since it has an IP67 waterproof rating, it can withstand normal exposure to water. But it's a good idea to wipe it down after a ride in dirty or wet conditions to keep it in top shape. Also, check the bolts regularly to ensure they're tight. Keep in mind that the AirTag itself has its own set of instructions and battery requirements, so refer to Apple's guidelines for that.