NIKE Shox Turbo + 13 Grey/Fireberry Ladies Athletic synthetic-and-mesh UPPER: Innovative, no-sew construction with targeted overlays to deliver lightweight, breathable comfort and flexiblt support. MIDSOLE: Nike Shox cushioning provides impact protection and a smooth ride, with a light, flexible Cushlon forefoot. OUTSOLE: BRS 1000 carbon rubber heel with an environmentally preferred rubber Waffle outsole throughout for traction. Flex grooves for a smooth transition.