Using this pack is easy. First, open the main compartment and put your things inside. You can also use the 2 - liter Crux Reservoir for water. Just connect it properly using the Quicklink disconnect. Adjust the sternum strap to get a comfortable and stable fit. When you need to add an extra layer, use the bungee overflow to stash it quickly. For safety, the reflectivity on the pack helps others see you. As for maintenance, keep it clean by wiping it with a damp cloth. Don't use harsh chemicals. When not in use, store it in a dry place. Also, make sure to empty the reservoir and let it dry completely to prevent mold growth.