Using the Lincoln 2-in-1 Welder's Dufflepack is easy. First, decide if you want to use it as a backpack or a duffle bag. If you choose the backpack, adjust the shoulder straps for a comfortable fit. You can carry it hands - free, which is great for moving around your work area. To use it as a duffle bag, just attach the padded shoulder strap. When loading, place heavier items at the bottom for better balance. As for maintenance, clean it regularly with a damp cloth. Avoid using harsh chemicals as they may damage the Military - Grade 1680 Denier Nylon. Store it in a dry place when not in use. Make sure to check the shoulder straps and zippers from time to time for any signs of wear and tear.