Just like you, the Under Armour Speedform Apollo has a need for speed. Innovative Micro G cushioning absorbs shock and returns it to your run, giving you more lift and energy return so you can run longer. Foot is lower to the ground, providing you with a better feel for what’s underfoot, which enhances your ability to change direction quickly. Perforated upper is both lightweight and breathable. Silicone grip around the heel promises locked-in support. Outsole includes Under Armour's Light Speed Grip in high-wear areas for minimum weight with increased durability and traction.