This line of shoes is a line I've worn for over two decades. I don't know if Reebok made these changes or if this new line is fake. But this last batch I received is not the real model I've been dedicated to for so long. The material from which it is made varies. All air vents have been removed. Haven't worn them yet as I'm seriously considering returning them and looking for a replacement/alternative. I'm sad to say this because I've been such a longtime and loyal Reebok fan for almost 30 years.