Under Armour UA Performance Tech 3-Pack Low Cut Socks. These socks are designed for athletes, keeping your feet cool and providing arch support. They feature durable material that wicks sweat and dries quickly, a new Locked-In Fit design to keep the sock securely on your heel, and medium cushioning throughout the foot for comfort and protection. Mesh panels on the top of the foot enhance breathability, and built-in arch support helps reduce foot fatigue.