Using the Serfas Shuttle Bag is a breeze. First, install it on your bike seat post using the rubber mount and secure it with the velcro saddle rail strap. Open the main zippered compartment to store your essentials like tools, snacks, or a small first - aid kit. The interior mesh pocket is great for keeping small items organized, and you can place your CO2 cartridges in the holders. When it gets dark, hang your taillight on the external loop for better visibility. As for maintenance, keep the bag clean by wiping it with a damp cloth regularly. Avoid exposing it to sharp objects that could tear the fabric. Also, check the velcro and zippers periodically to ensure they're in good working condition.