Under Armour Women's Speedform Apollo Synthetic-and-mesh REGULAR: A slimmer athletic cut that delivers better mobility by eliminating the bulk of extra fabric. eamless heel cup with silicone grip for a lockedin anatomical fit Smooth ultrasonic welded seaming with Bemis tape for nexttoskin support and comfort Perforated toe with ultrasonic seal for durable breathability Fulllength Micro G midsole creates an incredibly lightweight and responsive ride