Using your Portland Design Works Zigzag Bottle Cage is super easy. Just slide your water bottle into the cage, and it'll hold it securely while you ride. When it comes to the stash bag, you can use it to store small items like snacks for an energy boost on the go or loose change for unexpected stops. As for maintenance, since it's made of stainless steel, you can simply wipe it down with a damp cloth to keep it clean. Avoid using harsh chemicals as they might damage the finish. Also, check the cage and the stash bag regularly for any signs of wear and tear. If you notice any issues, you might need to replace the parts to ensure continued use.