Under Armour Women's UA Speedform StudioLux 100% Synthetic Imported Synthetic sole Upper: Innovative UA SpeedForm technology combined with a sleek and sporty minimalist silhouette Light, flexible, form-fitting upper with strategic perf pattern for superior breathability Seamless heel cup with foam collar offers a locked-in, anatomical fit Smooth, ultrasonic welded seams for next-to-skin comfort and durability Wraparound lace system for extra support