Imported Rubber sole Boost your speed without straining your feet wearing adidas Running Ultraboost Web Alphaskin footwear. adidas Primeknit recycled textile upper. Textile lining and insole. Removable Boost cushioning in midsole. Round pointed toe. Boost your speed without straining your feet wearing adidas Running Ultraboost Web Alphaskin footwear. adidas Primeknit recycled textile upper. Textile lining and insole. Removable Boost cushioning in midsole. Round pointed toe. Lace closure. Back lift design for added support. Underfoot torsion to maximize the energy return. Striped overlays on side. Lattice design on the midsole and outsole. Rubber outsole.