I am working on an ODST cosplay and need help with the backpack. I want to make it functional to use it as a backpack for cons or other props so it should be durable and carry around 3-4 kg on top of its own weight and be durable enough for every day use / be resistant for outdoor weather and cleanable while still having this plated armor appearance. My first thought was to print it out of nylon (nylon cf?) and use regular backpack straps to hold it. Can I get your opinions?