This is a military backpack. I received it as a gift, but I'm selling it because I don't use it. As shown in the photos, there's a tear and one button is missing. Thank you for your understanding. I don't know the brand or age, but there are no tags. English is printed in various places, and the hardware is heavy, so it doesn't seem like a replica. (Please don't rely on my knowledge, as I'm not an expert.)