Thing is, when you get to your destination, you can carry the bag with the handle, or over your shoulder with the strap, or unzip the base to remove the flaps & magnets, and use the two straps that are now exposed as a back pack. It's got reflective material on both sides and comes with a waterproof, elasticised, cover for when it rains, and a zip round the base to allow it to concertina up, for carrying more stuff. It's also got a large clear plastic map pocket on the top, so you can see your map while you're riding. Cost me €39 from Lidl. Dunno if you have them in America, I think it's a German chain. We had them in England.
