Oh , I'm sorry...Well i don't know if I am any help! I still don't know which one I am keeping. I think if I was going to carry alot of heavy things or boxy things, The City is better, as the shape on the Step pulled weird at the bottom with my wallet, water bottle and vitamin bottle! If it had stayed flatter on the bottom it would make sense, because of the cardboard thing that supposedly prevents it from squishing down next to your body-like the City can. I think the best thing to do is use it for a day!