Under Armour Charge RC Women's Running Shoes The Under Armour Charge RC is made with HeatGear that controls the foot's temperature, a built-in Carbon Spring Plate to enhance energy return and Micro G foam cushioning for long-lasting comfort. Feel the one-of-a-kind fit with Zonal UA Compression that conforms to your foot with every step you take. Carbon and blown rubber make up the outsole, providing you with the ultimate durability.