UA AMP Technology amplifies the biomechanics of your foot's movement for precision fit, feel & proprioception. Innovative UA SpeedForm® technology delivers zero distraction while training. External TPU heel counter for locked in support. Silicone taping on the forefoot for grip & durability during training. Molded toe cap. Full-length Charged Cushioning sockliner provides ultimate comfort & fit. Dual-layer midsole combines Charged Cushioning® on top of Micro G® foam for the ultimate blend of cushioned support & explosive responsiveness.