As more and more Americans are working to become fit and healthy, one of the top athletic clothing companies – Under Armour – has been building a team to help improve its use of natural fibers. Relying on cutting edge research to provide products that wick away moisture, Under Armour products traditionally were not made of the classic sporting apparel material - cotton. However, since early 2011, one of the company’s most popular items has been Charged Cotton™, a line of clothing that uses cotton -- the fabric of our lives.