Under Armour Womens Speedform Studiolux, Siberian Iris/Purple, 6.5 B Synthetic-and-mesh Innovative UA SpeedForm technology delivers zero distractions while working out Seamless heel cup provides the ultimate anatomical fit Smooth, ultrasonic welded seaming with Bemis tape for next-to-skin support and comfort Perforated upper with ultrasonic seal for durable breathability Shaves seconds off your day as you transition from one activity to the next Full-length Micro G midsole provides cushioned support Low, minimal midsole height provides great stability for low impact work outs