Under armour speedform gemini 2 mens trainers the ununder armour speedform gemini 2 mens trainers have innovative speedform technology which destroys the rules of footwear construction helping to deliver zero distraction while you are running the upper part of the shoe features a seamless heel cup with a foam collar to provide a locked in anatomical fit keeping you comfortable on the go with no irritation smooth ultrasonic welded seaming has been used with bemis tape for next to skin sup