To use this backpack, unzip the main compartment to store your bigger items like books or clothes. You can keep smaller things like keys or cards in the internal pocket. The external small zipped pocket is great for quick - access items. Use the side mesh pockets for your water bottle or other small stuff. When carrying it, adjust the shoulder straps to your comfort level. For maintenance, spot - clean it with a mild detergent and let it air dry. Avoid using harsh chemicals as they might damage the fabric and the prints. This backpack is for everyday use, so don't overload it to keep it in good shape.