Nike has developed a line of shoes called the Nike Free Run that has become very popular among long distance runners, track and field athletes, and football and basketball players. Nike Free is unique because it has a special design incorporating new technology that simulates barefoot running mechanics while still wearing shoes. The goals that barefoot running technique strives to reach, and that Nike Free has adapted, is attempting to strengthen the intrinsic muscles of the foot and leg thus preventing long term injuries.The Nike Free Run can be ordered on a scale of 10.0 to 3.0 with 10.0 being the most supportive shoe and the 3.0 being the least supportive and most similar to barefoot running.Nike is continuously trying to find ways to make small changes and adding versions to the Nike Free Run to allow the largest population of runners to use them.The Nike Free Run 2 is really built for routine runners with no other major foot problems. Furthermore, barefoot-style running requires significant changes in running mechanics to be successful. If you run in these shoes just as you would in a structured running shoe, you will put yourself at risk for becoming injured.Nike Free Run technology has really changed the face of running shoes, opening a whole new vision into what running shoes could do for your feet and body. Although these shoes are becoming increasingly more popular in the running community, these shoes simply aren't for everybody. Be sure to visit with your sports podiatrist who can help recommend the right shoe for you.