Nike Air Zoom Structure 21 Running Shoes | Runnerinn。? Nike Air Zoom Structure 21 Men’s Running Shoes ? Classic black and gray Nike Air Zoom Structure 21 running shoes featuring responsive Air Zoom cushioning, breathable mesh uppers, and Nike’s Dynamic Support stability system. Designed for runners and walkers who want a comfortable, supportive shoe with excellent cushioning and stability. Features: ✔ Air Zoom cushioning ✔ Dynamic Support stability technology ✔ Breathable mesh upper ✔ Lightweight performance design ✔ Durable rubber outsole ✔ Lace-up closure ✔ Great for walking, running, gym workouts, and everyday wear Condition: Excellent preowned condition. Only worn a handful of times. Minor interior pilling from normal sock wear. Uppers, midsoles, and tread remain in great condition with plenty of life remaining. Soles show minimal wear. Please review all photos for condition details. Size: Men’s 11 Color: Black / Gray / White ⸻ Keywords nike running shoes, stability shoes, walking shoes, gym shoes, athletic sneakers, air zoom, structure 21, running sneakers, mens size 11, training shoes, workout shoes