Nike Free 3.0 V5 EXT 579828-006 Wolf Grey/Red Violet/Anthracite Women's Running Shoes Inner sleeve made with engineered mesh for a dynamic, sock-like fit that hugs the foot and allows for easy on and off Flywire cables support midfoot for an adaptive fit Fused Phylite midsole for an ultra-lightweight, resilient ride Deep flex grooves for enhanced flexibility and a smooth, efficient stride Diagonal cuts through the arch for flexibility and foot strength