Sport Blending Bottle Mixer Shaker Cup Blend Water Protein Vitamin Powder 20 oz Stylish leak proof secure design shaker bottle. BPA Free. Perfect for protein shakes, smoothies, pancake batter, scrambled eggs, fiber drinks, dressings and meal replacements. The blending ball moves freely inside the bottle as you shake, mixing the ingredients with ease. Removable Strainer takes care of clumps and lumps. Embossed markings measure both ounces and milliliters.