Nike Women's Air Max Fusion fabric-and-synthetic Single-layer Mesh - A highly breathable upper also built with synthetic upper for comfort and support. Max AIR Unit - For maximum impact protection and cushioning when landing after running and training. Multi-Directional Flex Grooves - At the midsole and outsole for enhanced natural range of motion, meaning your feet are supported without being restricted. Rubber Pads - Located in the heel and forefoot for enhanced durability. Phylon midsole - A responsive, cushioned midsole material which cushions your landing and makes your ride much more comfortable.