Upper Material: Features a highly breathable, woven mesh vamp combined with seamless synthetic overlays for flexibility.Heel Frame: Anchored by the signature elastic heel strap and integrated rubber cage component, carrying embossed Nike : Built with a cored-out Ultra foam midsole embedded with an Air-Sole unit, yielding a dramatically lighter profile than original Huarache models.Fit Profile: Possesses a sock-like inner bootie construction. Note that this specific silhouette famously fits snug; purchasing a half-size or one full size larger than your standard sizing is universally recommended.