Innovative ua speed form construction molds to the foot for a precision fit, eliminating all distraction. Core short midfoot panels provide ultimate lock down fit and flexible support. Lightweight mesh used on the tongue and toe box to enhance fit and increase ventilation. External TPU heel counter for additional support and structure. Embedded sock liner for added cushioning, support and seamless comfort. Charged cushioning midsole uses compressed foam for even greater responsiveness and durability, providing optimal cushioning and energy return. Micro heel unit and medial posting increase stabilization. Dual density medial post helps prevent over-pronation. Blown rubber under the forefoot is lightweight yet incredibly responsive. High-abrasion rubber placed under the heel to help absorb ground contact.