Dynamic Fit technology Dynamic Support midsole Honeycomb outsole pattern improves traction Flywire cables for better support Flymesh construction for ventilation Designed with support and response in mind, the Nike Air Zoom Structure 20 Running Shoe ensures a smooth, stable ride that feels ultra fast. The Flymesh upper provides targeted ventilation, while Flywire cables integrate with eye-stays for support. The updated Dynamic Support system in the midsole helps your foot as it transitions through footstrike. Finally, the honeycomb outsole provides durability and multi-surface traction.