Oklahoma Sooners 40 x 28 2 Sided House Flag. This Oklahoma House Flag is made using a durable 100% Nylon material and has a fully sublimated, brightly colored graphic on both sides to ensure that all your neighbors can clearly see that this is Sooners territory! Each OU flag measures 40 inches x 28 inches and has a pole sleeve sewn into the top. Cheer on your Oklahoma Sooners this season with a beautiful one-of-a-kind Magnolia Lane Oklahoma Sooners OU house flag. BoomerSooner Officially licensed Oklahoma Sooners fan gear.