Under Armour Men's UA Speedform Apollo 2 Running Shoes Synthetic Imported rubber-sole sole Innovative UA SpeedForm technology delivers zero distraction while running Foam infused into heel to provide better lock down & plush comfort Smooth, ultrasonic welded seaming with Bemis tape for next-to-skin support & comfort Perforated upper with ultrasonic seal for durable breathability Arch reinforcement construction for precise fit & foot guidance