Sonic Red Bull Summer Edition Watermelon Slushs contain between 180-540 calories, depending on your choice of size. The size with the fewest calories is the Small Red Bull Summer Edition Watermelon Slush (180 calories), while the Route 44 Red Bull Summer Edition Watermelon Slush contains the most calories (540 calories).
Choose from the sizes below to see the full nutrition facts, ingredients and allergen information.
