Under Armour Women's Speedform Fortis 2.1 Running Shoe Mesh Rubber sole Tri-color knit textile uppers offer comfortable breathability and lightweight structural support Ultrasonic seams promote a sock-like, irritation-free feel Seamless heel cup locks the foot into place and provides an anatomical fit Fixed, molded 4D foam footbed conforms to the foot's shape, and features moisture-wicking properties for a cooler, drier fee