The adidas adiZero Aegis is a faster, sleeker, lightweight running shoe that offers a smoother, more natural touchdown at high speeds. Air-mesh upper adds maximum ventilation. Lightweight, high-rebound midsole compound delivers a fast and efficient transition. Full-forefoot adiPRENE®+ aids forefoot propulsion and efficiency. Extended TORSION® SYSTEM brings heel and midfoot stability. 3D ForMotion® provides enhanced transition and responsiveness. adiWEAR® outsole for best durability in high-wear areas. Forefoot lugs gives traction on road surfaces. Wt. 9.0 oz.