Under Armour Women's Ua Speedform Apollo 2 100% Synthetic-and-mesh Imported Rubber sole Shaft measures approximately 2.4" from arch Welded Speedform upper creates a smooth, second-skin fit Embedded sockliner wicks away sweat and adds extra cushioning Charged foam on top of a Micro G foam midsole for responsive cushioning and support Anatomical rubber putsole for natural flex and durable traction