Using this 40L Chasm duffel bag is super easy. When you want to use it as a duffel, just carry it by the top handles. To convert it into a backpack, pull out the shoulder straps. When packing, start with bulkier items at the bottom and use the mesh pockets for smaller things like keys or toiletries. Be careful not to overstuff the bag to avoid damaging the straps or the zippers. To keep it in good shape, clean it with a damp cloth regularly. If it gets wet, let it dry completely before storing it.