In 1996 Kevin Plank created his company called under armor, and sold his first product called #0037, also known as The Under Armor HeatGear T-shirt.
In 1997 under armor released cold gear, then eventually all season gear
By 1998 the under armor headquarters move into a wear house in Baltimore.
On November 18, 2005 Under Armour went public and became the first U.S. based initial public offering in five years to double on its first day of trading.
Under armor got so popular they sponsored the BCS championship game in 2010 when the auburn tigers won