Due to a back injury that prevented me from weight-lifting or running, I began walking as my form of exercise but the shoes I were using weren't very comfortable- I was doing a 3.3 mile walk, 3 times a day, every day.  I got these shoes last summer and now that it's time to get a new pair of shoes, I'm going to buy them again.  They are comfortable and durable.  I'm very happy with them.