Under Armour is an American sports clothing and accessories company that was founded in 1996 by Kevin Plank, a former football player for the University of Maryland. The company's mission is to make all athletes better through innovation and design. Under Armour's product line includes a wide range of performance apparel, footwear, and accessories for sports such as football, basketball, baseball, golf, and running.

Under Armour is known for its high-quality, moisture-wicking fabric technology, which helps keep athletes cool, dry, and comfortable during their workouts or games. The company has also developed a range of innovative products such as its "ColdGear" line, which is designed to keep athletes warm in cold weather, and its "HeatGear" line, which is designed to keep athletes cool in hot weather.

In addition to its performance apparel, Under Armour also offers a range of casual clothing, such as t-shirts, hoodies, and jeans, as well as accessories such as bags, hats, and socks. The company has partnerships with some of the biggest names in sports, including NBA star Stephen Curry and NFL quarterback Tom Brady.

Under Armour's success has made it a major player in the sports apparel industry and its products can be found in retailers all over the world. The company has also made a commitment to sustainability and has implemented various initiatives to reduce its environmental impact.