Run farther without worrying about your feet by wearing shoes that actually fit like the Under Armour Speedform Running Shoes. Inspired by spacesuits and made in a bra factory instead of your typical shoe factory, the Speedform is one of the most comfortable running shoes out there. It's seamless so you dont feel rough edges inside the shoe. Like your own broken-in leather boot, it feels like a second skin. You can wear them with socks but Under Armour recommends runners try them barefoot. Why a bra factory? It has something to do with the fact that it was Playtex, a bra manufacturer, who made the first spacesuit. The thinking goes, if a bra manufacturer can make spacesuits for NASA, imagine what it can do to footwear.