Seamless Flymesh upper and zones of ventilation engineered into the material: Provides breathable comfort Anatomical toe design follows the natural contours of the foot: Enhances propulsion by increasing space in the forefoot, allowing toes to splay and push off the ground Cushlon midsole: Provides incredibly lightweight and responsive cushioning 3/4-length injected Pebax® spike plate with generative design: Uses an algorithm to identify where zones of stiffness and flexibility are needed Six detachable spike pins: Delivers optimal grip Sharkskin heel pad: Enhances grip for multi-surface traction and reduced overall weight WEIGHT: 3.5 ounces