The Oklahoma Sooners are your 2020 Big 12 football champion! Commemorate the moment with Oklahoma Big 12 champs shirts and hats befitting the Sooners as they head to the postseason. Welcome to the Official Big 12 Store featuring a huge assortment of Big 12 apparel, sports gear and merchandise. Big 12 Conference fans can shop our endless selection of Big 12 clothing featuring the latest merchandise you can't find anywhere else. Get ready for Big 12 football with the latest gear featuring football schedule shirts, local tees and jerseys.