Ideally you would throw a 3rd pair into the mix, but still better than wearing them every day. A determining factor is whether or not you use shoe trees. Another is whether you walk much or drive and then walk on carpet all day. You should be able to get 5 years or more if you don't walk much. Then you can get them recrafted. I don't know if there is a limit to how many times you can recraft them.