Girls' Nike Big Kid Sonic Fly Running Shoes Push your pace in this performance-ready running shoe designed for a smooth, responsive ride. The breathable mesh upper with synthetic overlays keeps your feet supported and ventilated during every stride. A sculpted midsole delivers soft cushioning and energy return, while the full-length rubber outsole offers durability and grip for varied surfaces. With a classic lace-up front and sleek, athletic silhouette, it’s built to go the distance in style.