Under Armour Men's UA Micro G Nitrous Running Shoes 100% Mesh Imported Synthetic sole Upper: Ultra-durable, upper built from mesh for breathability Welded overlays provide structure and lateral support Breathable mesh tongue Midsole: Dual-layer Micro G foam turns cushioned landings into explosive takeoffs Footbed: Molded 4D Foam footbed conforms to your foot's exact shape, eliminating slippage