Always there to support you, the Nike Air Zoom Structure 20 Men's Running Shoe is updated with a wider base for incredible stability, and bouncy, flexible cushioning that delivers one smooth stride after another. Dynamic Support technology adapts to your stride to provide a stable landing with every step. Soft foam cushioning eases the transition from heel to toe. Dynamic Fit technology wraps your midfoot for a secure, personalized fit and locked-in feel. A seamless Flymesh upper provides lightweight breathability and lasting comfort.