Looking for a way to support your favorite team all year long? Check out these official NCAA Oklahoma State Cowboys silicone cup sleeves from MasterPieces. Made with high-quality, durable silicone, they are perfect for any game or sporting event. They are also dishwasher safe and fit most cup sizes, making them the perfect drink accessory. So show your team spirit and add some fun to your drinks with these Oklahoma State Cowboys silicone cup sleeves.