DESIGN: Molded to strengthen overall shoe stability and provide a more structured ride with ControlKNIT + Engineered Knit Technology Ortholite Impressions Fitbed Molds to your foot for a personalized fit IN-SHOE COMFORT: Provides easy on flexibility and tacked-in heel fit with the TruFIT system Responsive StratoFOAM OptiFlex Outsole Bends naturally with your foot to reduce walking fatigue. DURABILITY & TRACTION: Carbon Fiber Powerplate Provides maximum resistance to rotational swing forces