Saucony Women's Pro Grid Kinvara 3 Running Shoe Synthetic and fabric Synthetic sole FlexFilm welded to the upper to reduce thickness Memory foam heel pods to secure fit HydraMAX Lining wicks moisture Heel ProGrid shock absorption XT-900 high-durability rubber in key areas of the outsole Saucony loads up the third edition of their Kinvara with crucial technology and still manages to craft a lightweight performance.