Optimized for Overnight Oats The Oats Overnight BlenderBottle comes with a prominent fill line for your milk or milk substitute and is the perfect size for a serving of Oats Overnight! Perfect to take on the go! Convenient design and snap-lock top allow you to take breakfast with you on the way to work. You’re busy, make sure your breakfast can keep up – #ditchthespoon Easy prep – No whisk ball needed When preparing Oats Overnight (or your homemade DIY overnight oats), just add 8oz milk or milk substitute, add ingredients, close the top, and shake! One more quick shake in the morning and breakfast is served! The oats, chia seeds, flax seeds, and other superfood extras do a great job dispersing the overnight oats, so no whisk ball is needed, and would block the flow of oats.Convenient 8oz fill line for your favorite milk or milk substitute. Dishwasher safe, BPA- and phthalate-free. Optimized for overnight oats – NO WHISK BALL INCLUDED. 20-ounce capacity (Note: measurements only go to 12 ounces).