Rally House is the premier destination for Kansas City Chiefs Tyrann Mathieu merchandise and gear! Pair your new Tyrann Mathieu gear with the best Chiefs Hats, Polos & Dress Shirts, and Sweatshirts & Sweaters to get ready for gameday! Shop all of our Kansas City Chiefs gear online now! Super Bowl bound! The Kansas City Chiefs are the AFC champions! Shop official t shirts, sweatshirts, and more! GO CHIEFS!