Using the Incase DSLR Sling Pack is a breeze. First, open the main compartment and use the customizable dividers to arrange your DSLR, 11' MacBook Air, iPad, and iPhone just the way you like. When you want to access your photo gear, simply sling the pack over your shoulder. No need to take it off! For comfort, make sure the padded shoulder strap is adjusted to fit you well. As for maintenance, keep it clean by wiping it with a damp cloth when it gets dirty. Avoid exposing it to extreme heat or sharp objects that could damage the 840D nylon construction. With proper care, this pack will serve you well for a long time.