Pour milk into the outer larger cup to your desired preference without filling past the max fill line. Screw in the inner cup & top lid into the outer cup filled with milk. Add your desired amount of cereal to the inner cup and snap on the top cap. Tilt back and enjoy! The cereal and milk don't meet until they hit your mouth! Helps with Portion Control Holds just under 2 servings of cereal so you won't ever go overboard on portions. Improved Flow Control New and improved flow control for the perfect milk to cereal ratio in every bite. Made with Tritan A glass-like, durable plastic that is almost indestructible. We even ran over it with a Prius! Dishwasher Safe & BPA Free Absolutely no BPA/BPS, withstands heat and completely safe for the dishwasher. How much cereal does it hold? The CrunchCup XL holds just under two official serving size of cereal (i.e. about 1.6 Cups or 364ml depending on cereal size). The outer chamber can holds up to 10 fl oz of liquid. How do you control the flow of milk? This can be done two different ways. Put your finger over the tiny breather hold on the lid. Or, to partially cover the milk spout with your lower lip as the milk is coming out. This will ensure you get the right ratio of cereal to milk every time. Is CrunchCup dishwasher and microwave safe? Yes, the CrunchCup is dishwasher friendly, but microwaving is not recommended and may lead to shrinkage and/or leaking over time. What is CrunchCup made of? The CrunchCup is made out of a durable, high-grade, BPA/BPS-free, plastic called Tritan. It looks like glass, is dent-proof and shatter resistant. Are there any cereals that don't work? We have done extensive testing and the only cereal we have trouble getting out consistently is Frosted Mini Wheats.