Costco (COST) has begun selling official Formula 1 (F1) merchandise at some of its warehouses in an effort to reach a passionate fan base. The company's products include branded caps and polo shirts representing several F1 teams, including McLaren, Red Bull Racing, Ferrari, and Mercedes. However, the merchandise appears to be from the previous racing season and prices are lower than those listed in the official F1 online store. Currently, the collaboration is available only in the UK, Australia, and Canada. It is unclear whether the F1 merchandise will be expanded to U.S. warehouses. Despite F1's rapid growth in its U.K. fan base, the sport's popularity remains significantly stronger internationally.