The Lowepro 500 AW is for those photographers who have to walk far with big lenses. If there was a massively multiplayer online role-playing game for photographers, this bag is what the tank character would carry. It is good for when you have to travel in an area where you are getting bit by mosquitos and other strange bugs, where you have to hike or bike for three or four hours, or where you have to climb up a mountain just for an image.