I'm 60 years old, I walk an average of 6+ miles per day, and I alternate these shoes with two other pair. My short walk is 4 miles and my long (to date) is 9.5. The DMX Max system is comfortable and light. I estimate I've put only about 50 miles on this pair thus far, but they have performed admirably. If these last as well as I hope they will, I'll buy another pair later.