Built for the neutral runner. RUNSHIELD technology brings whisper-quiet, water-resistant qualities to the upper, to keep feet feeling drier without sacrificing flexibility. Breathable, open mesh upper with lightweight synthetic overlays. Updated FlexFilm provides an even more dialed-in fit without compromising its lightweight design. Pro-Lock technology provides secure fit through the mid-foot. Lace-up closure. Lightly padded tongue and collar. Breathable fabric lining. Removable foam insole. PowerGridâ"¢ midsole material offers lightweight cushioning, helps absorb impact, and delivers energy back to the runner with every stride. Midsole Height: Heel/Toe: 22 mm/18 mm Differential: 4 mm Ultralightweight and durable iBR+ rubber outsole. Strategically-placed XT-900â"¢ carbon rubber outsole material delivers exceptional traction and long-lasting wear. Imported.