NIKE Af1 Ultra Flyknit Low Mens Running Trainers 817419 Sneakers Shoes fabric-and-synthetic Lightweight and Breathable mesh Upper - keeps your feet cool and gives you a perfect fit with the 360 degree overlays. Phylon midsole - A responsive, cushioned EVA midsole material keeping you from landing too heavy and makes your ride much more comfortable. TPU overlays - Supportive overlays lock your foot in place and stops it from slipping about reducing the risk of blisters and injuries. BRS 1000 - Carbon rubber outsole for great durability in those areas that get worn very quickly. Encapsulated Air - Full length Nike Air for a low profile responsive ride keeping you close to the gorund but well protected.