Everything about the shoe is built for speed—from the lightweight Charged Cushioning for greater energy return to the comfortable knit upper for a locked-in fit. Innovative UA SpeedForm® construction molds to the foot for a precision fit, eliminating all distraction. Threadborne™ knit upper for a breathable, compression-like fit that delivers lightweight directional strength. Breathable mesh tongue attached to the footbed by stretchable support wings to increase support & maintain a snug fit throughout the foot. Embedded sockliner for added cushioning & seamless comfort. Ultra-lightweight, one-piece foam midsole engineered to deliver an extremely responsive ride. Blown rubber under the forefoot is lightweight, yet incredibly responsive. High-abrasion rubber placed under the heel to help absorb ground contact.