Nike Structure 25 Women's Road Running Shoes - Size 8.5 Supportive cushioning provides steadiness for everyday runs. Experience a stable platform without sacrificing performance with a combination of Cushlon 3.0 foam and a Zoom Air unit. Plus, a higher stack height makes it more comfortable, stable, and supportive than ever. Key Features Breathable engineered mesh upper has targeted zones for support Cushlon 3.0 foam midsole with a Zoom Air unit in the forefoot for cushioning and stability Durable waffle outsole for grip and stability Midfoot support system for enhanced arch support to control pronation What’s New? New Cushlon 3.0 foam underfoot and a higher stack height make it our most stable and supportive model yet.