Thanks for the feedback. Answers to your questions: Preformance, nothing extra really Air in the heel and zoom air in forefoot, for comfort and if used for sport activities responsivness. It has a TPU heelpiece for support and to reduce risk of injuries while out joggin, twisted ankle etc. No it aint a strap just a design elemant, the concept of that was to resemble the idea of how the window is made up of 3 pieces on the car. A big one in the middle, and a small one infront and behind it. The "strap like elemant" resembles the large piece, the air vent in front and the outrigger behind it are the two smaller windows, just an idea....The stripped material would be a mesh covered with stripes with Polyetherane, for breathability. Well its a sports car, which are usually low to the earth so thought I'd use that somehow. Thanks for the comments!
No bird soars to high as long as it soars with its own wings.