Welcome to the future! This is not just an ordinary shoe, it features a built-in microchip that calculates your weight, pace and terrain and adjusts itself accordingly. That's right, it actually adjusts itself as it determines what would make the most sense for the wearer's current conditions. Next time you're getting ready for a race, give yourself a leg up with this new technology.

This shoes breaks easily. Got less than a dozen use out of it before breaking. Supplier does not provide after sales replacment or support. Terrible experience and very expensive regular running shoes.