"Welcome to the world of RealFlex -- a collection of lightweight and flexible running and training footwear designed to move with the natural movements of your feet, while helping to protect them from the wear and tear of city streets and hard training surfaces.
Exclusive RealFlex technology helps promote natural movement of the foot. Individual flex-friendly "nodes"" are designed to help your feet move and flex as you work out. The RealFlex Transition adds reinforcements in the front and back to enhance stability through your workout. The single layer polyester mesh upper has a hotmelt appliqué to add strength with minimal weight. The thin micro suede tongue won't crowd your foot. The full collar lining and added heel counter add extra comfort that lasts throughout your workout, with a molded sock liner for cushioning."