Under Armour Men's UA Speedform Fortis 2 Running Shoes Synthetic Imported Rubber sole Shaft measures approximately 1.9" from arch Innovative UA SpeedForm technology delivers an unprecedented precision fit for unrivaled comfort & zero distraction Breathable, three-color knit mesh upper locks down your foot & increases ventilation Seamless heel counter built into the upper for sleek, lightweight structure Ultrasonic seaming with Bemis tape on lateral & medial sides for next-to-skin support & comfort Laser-cut perforations for enhanced breathability