Brooks Women's PureFlow 2 Lightweight Running Shoes The lightweight construction and lush cushioning of the PureFlow 2 are a perfect match. Comfort features engineered in a lean way like a shaped BioMoGo DNA midsole that gives your feet a cushy feel without added materials. Neutral to Guidance runners can experience a run for the senses without losing the comfort of dynamic cushioning. With a wider Nav Band coming up the lateral side and grabbing the midsole, the foot receives arch support without the bulkiness of underfoot materials. A center strike pod provides guidance in finding the natural landing zone.