Nike Footwear The speed cage inside of the structure is made of a thin but strong material that secures the foot to the outsole without adding additional weight for optimal lockdown. A redone design improves the fit, so that it better simulates the foot. The upper is made of Vaporposite+, which combines a grippy, grid mesh with a premium material for optimal ball control at high speeds. The material provides a tactile feel across the surface of the upper. It’s soft, but stable and wraps tightly around your foot, giving you a more natural on-ball feel when dribbling, passing or scoring.