Introducing our portable Stay-Open Clamshell Design Shaker Bottle! Easy to carry with a classic screw cover and safety clamshell design, keeping your gym bag and car seat dry. The metal Blender Ball ensures a well-mixed drink. Easy to clean and dishwasher-safe, it’s made of high-quality, BPA and phthalate-free materials. With both ounce and milliliter scales, this bottle holds up to 28 ounces of your favorite beverages, excluding the Blender Ball and nutritional powders. Stay hydrated in style!