Under Armour Women's Charged CoolSwitch Running Shoe 100% Textile and Synthetic Imported Rubber sole Shaft measures approximately 2.75" from arch UA CoolSwitch lining uses an exclusive coating on the inside that pulls heat away from your foot, making you feel cooler & able to run longer Slip on lightweight, stretch upper delivers a precision fit & enhanced breathability Traditional lacing system with pull tabs for easy entry Perforated sockliner provides underfoot ventilation to keep the foot cool Two-piece Charged Cushioning midsole uses compressed foam for even greater responsiveness & durability, providing optimal cushioning & energy return