Optimum Nutrition Shaker Bottle A practical shaker bottle designed for your everyday supplement routine. The included metal mixing ball helps blend protein powder, mass gainers, pre-workouts, and other powdered supplements smoothly with water or milk. Featuring the iconic Optimum Nutrition logo, this shaker offers a clean and sporty design that is perfect for the gym, workouts, travel, or everyday use. Key Features - Optimum Nutrition branded design - Metal mixing ball included - Helps create smooth, well-mixed shakes - Suitable for protein, pre-workout, and other powdered supplements - Easy to use and carry - Ideal for gym, travel, and everyday use