Over the shoulder major gear hauler. Using a sling bag keep your chest free of a lot of hanging hardware and insures your abilityt to cast, retrieve and most importantly catch and release fish. It is also a very versitle travel bag. Stuff your camera, guide book, rain coat, coins and note books, water bottle and the souvenir you just had to have into this hungry beast and go see the world. Used twice on the river. I have two only really need one.