NIKE Women's Fs Lite Run 2 Shoe Textile and Synthetic Rubber sole Shaft measures approximately 2.22" from arch Flywire cables in the forefoot integrate with the laces for a dynamic fit Anatomically-placed foam pods on either side of the inner heel provide comfort and prevent heel slippage Hexagonal pattern is hot-knife cut into the outsole enhancing flexibility and 360-degree movement for a variety of training activities Dual-density foam is fused together to provide customized cushioning where you need it most The upper layer offers soft, comfortable support while the lower layer, which also doubles as an outsole, provides durable cushioning