One 5 inch Referee Bottle Cozy with Whistle. Foul! Blow the whistle on warm drinks with this jersey-shaped Referee Bottle Cozy. This foam holder will dress your drink while dressing up your party tables. It features classic referee stripes and a real whistle that warns others to keep their hands off your drink. Our Referee Bottle Holders are perfect for game day, and also make great gifts. Use one on a standard size bottle or can at your next sports celebration.