It's all about the numbers, right? This bottle is marked with ounces and millimeters, to make it easier to track exactly how much you're taking in or to measure out your protein powder. Lockable, leak-resistant lid also helps keep spout clean Carry loop for easy transport can be locked down when not in use Eastman Tritan™ material is shatter-, stain- & odor-resistant One-hand operation for hydration on the go Marked with ounces & milliliters for easy measuring BPA & lead free