Under Armour font here refers to the font used in the logo of Armour, which is an American sports clothing and accessories company founded in 1996.
The logotype of the company was probably designed based on Eurostile Ext Black, a geometric sans serif font designed by Aldo NOvarese in 1962. More details about the font can be found here.
Download Eurostile Font
The Eurostile font identified above is not available for free, please follow the link above and purchase the font. Meanwhile, you can take a look at our collection of fonts for cars, pop music and apparel as well as round-ups of new & fresh fonts around the web.