The UA HOVR™ Sonic has been a no-brainer for runners who like distance but want more flexibility. And now, with real-time Form Coaching from UA MapMyRun™, the UA HOVR™ Sonic 4 also helps you become a better runner. Features: CONNECTS TO UA MAPMYRUN™: tracks & analyzes your running metrics to help make you a better runner UA HOVR™ technology provides 'zero gravity feel' to maintain energy return that helps eliminate impact Compression mesh Energy Web contains & molds UA HOVR™ foam to give back the energy you put in Lightweight engineered mesh upper for ultimate breathability Tongue is attached to the footbed by stretchable support wings to maintain a snug fit throughout the foot One-piece heel construction with external TPU heel counter for additional support & structure Removable sockliner molds to the foot for customized comfort & cushion