To use this bag, you can choose between the shoulder and crossbody straps according to your preference and situation. Just open the bag and place your essentials like phone, wallet, keys inside. When it comes to maintenance, use a soft, dry cloth to wipe off any dirt or dust regularly. Avoid getting the bag wet as much as possible, and if it does get wet, dry it naturally away from direct heat. Also, don't overstuff the bag to keep its shape intact.