Nike Air Zoom Structure 22 Men's Running Shoes Phantom/Gunsmoke/Oil Grey : The Nike Air Zoom Structure 22 returns with an update in design while holding on to its stability running shoe roots. Dynamic support continues to provide smooth and stable transitions during the run while the Zoom Air unit in the forefoot provides responsive cushioning. For Runners Who... Have some Mild to Moderate Overpronation and need a little extra support under the arch. For those who like a smooth and stable running experience. What's New? Updates include a more modern look from engineered mesh and a heel overlay. A partial sleeve wraps around the foot for a snug, comfortable fit. Technical Elements Upper: Features an engineered mesh for targeted ventilation and support. Flywire cables help to secure around the top of the runner's foot. Midsole: Dynamic Support provides a smooth, stable transition during the run. Outsole: Features a Duralon blown rubber in the forefoot that enhances cushioning.