This is one of the toughest shoes i have ever had. The sole becomes very very comfortable within a short span of time. The material in front with the dotted grid provides flexibility as well as strength and the grid prevents the folds from being visible as is common in shoes with a solid front material. I have had these shoes for more than a year and in almost daily use but these are the same as if I bought them yesterday. Really great shoes!! I never write any reviews but these shoes have ea...