100% Mesh| Rubber sole| Engineered mesh upper for a breathable fit| Strategically placed ground contact EVA midsole delivers lightweight cushioning| Comolded medial post| Stay on Steady Ground: These FuelCell running Shoes feature ground contact EVA with a co-molded medial post for a lightweight yet responsive ride with an added touch of support| Built for Any Run: These performance running Shoes are built for a speedy ride on the treadmill or the road; and they’re engineered for comfortable support with a slightly structured upper