Incredibly lightweight and flexible with a glove like fit, the Brooks PureConnect 4 creates a better connection to the ground beneath the runner with adaptive cushioning and a slim profile. . Neutral shoe for runners with normal to no pronation. Adaptive BioMoGo DNA in the midsole responds to each foot strike to provide custom cushioning and responsiveness. Brooks DNA: Tailored cushioning that reacts to your specific weight, pace, gait, movement, and running surface. Rounded heel helps your body move in its natural running motion works to align the body by shifting the contact point forward, encouraging a more efficient stride. Toe flex outsole pods move independently, giving you tremendous support and flexibility. Flexible Nav Band band around the upper conforms to your foot and wraps it in featherweight comfort. Breathable mesh upper. Strobel construction for flexibility. Anatomical platform with a high arch. Best for small to medium body build. Best surface: road, track Competition: road racing. Lightweight construction: expect shoes to last approximately 250 300 miles.