Under Armour UA Micro G Defend Running Shoes mesh Strategically placed UA HeatGear fabric wicks sweat to keep your feet cool and dry when things really heat up Lightweight synthetic support structure adds the stability quick cuts and superior mobilitywithout adding bulk Low, light, full-length Micro G foam cushions as well as any traditional, bulkier foam, and also rebounds your heel-strike energy, creating forward momentum Non-marking, solid rubber outsole with lateral outrigger provides an added layer of stability without sacrificing flexibility