Shoes are a Mens size 7 (Womens 8.5) Worn less than 5 times. Great running or gym shoes. Nike React Infinity Run Flyknit 3 running shoes feature more cushioning around the heel and ankle for a softer, smoother ride. Nike added Flyknit technology in the upper creating specific zones of breathability, flexibility and containment so your foot feels secure, while still free to move naturally.