Under Armour Men's Speedform Fortis 2.1 Running Shoe Textile and Synthetic Imported Rubber sole Shaft measures approximately low-top from arch Innovative UA SpeedForm construction molds to the foot for a precision fit, eliminating all distraction Breathable two-toned mesh upper locks down your foot & increases ventilation Internal heel counter provides seamless, lightweight support & structure Embedded sockliner for added cushioning & seamless comfort Two-piece Charged Cushioning midsole pairs a soft, plush layer of foam on top of a layer of dense, harder foam for the ultimate blend of support & comfort