Crafted with an engineered warp spacer upper, the Under Armour Women's Machina 3 Running Shoes are incredibly lightweight with excellent ventilation that keeps you cool and allows your feet to breathe on long runs. The upper features a strategically-mapped design removing any seams or overlays so you can run without distraction, while an aerodynamic heel design, external TPU heel wrap and moulded EVA sockliner ensure a supportive lockdown fit for high-mileage performance. At the midsole, UA HOVR delivers responsive cushioning that quickly absorbs impact shock and transfers the energy into an explosive, forward-propelling take off. Finished with a channelled rubber outsole that has been mapped for durability in high-wear areas while promoting flexibility and natural movement. Connects to UA MAPMYRUN With a built-in Bluetooth transmitter, these shoes allow you to make a connection with your smartphone via the UA MAPMYRUN app to track and analyse your personal running metrics to make you a better runner. Giving you insight into pace, stride length, step count and much more data that can be used to improve your performance and efficiency.