Used once. I don't see any stains or dirt. It's compact and stylish, so I think it's easy to use. * Features: It has a cushioned pocket that can hold PCs and tablets up to 15 inches, a side drink holder, and many pockets inside suitable for storing small items. * Capacity: Approximately 27 liters, it is suitable for a wide range of situations such as commuting, going to school, outdoor activities, and travel. * Material: Durable polyester canvas is used. * Comfort: The FlexVent suspension system provides excellent breathability and cushioning, providing a comfortable carrying experience even after long hours of use. * Design: The three-dimensional panel molding is stylish and suitable for daily use.