Oklahoma Sooners Long Sleeve Boys Football Jersey Pajama Set. These one-of-a-kind snug fit Oklahoma football pjs are inspired by your Sooners football jersey. Each long sleeve OU pajama is made of 100% organic cotton and are designed to fit snug on your little Oklahoma Sooners fan with an elastic waistband for comfort. Featuring screen printed graphics and a tagless collar these are sure to be your little Sooners's favorite pjs! BoomerSooner Officially licensed Oklahoma Sooners fan gear.