[This review was collected as part of a promotion.] The TripleFlo Glow cup quickly became a favorite for me and my 17 month old boy. I like that it is easy to clean and assemble. I've bought many cups and sippys that have lots of parts that are hard to clean, are difficult to remember how to assemble them, or leak everywhere. I haven't had any of those problems with these cups. They are easy for him to hold with the thinner middle portion and the different hole sizes allow him to drink without making a mess. If the largest hole is the one being used he can hold the cup upside down and make it drip, but it is a slow drip and I can catch him before he makes a mess. Most of the time we use the middle sized hole, but it is nice for thicker smoothies, or juices to have the option of the larger hole. A newbie to cups would do great with the smallest hole and the option to stop the fluid flow for travel is great also. These are a cup that can grow with a child as their learning to drink on their own ability progresses. I wish I had this earlier and it would have saved me a cupboard full of leaking cups that my child has now outgrown. I love that theses glow in the dark because my boy can have this cup next to his bed and get drinks himself at night if needed. The only thing I would add to this cup is liquid measurements on the outside of the cup. When my child is sick, or for younger babies, it would be nice to know how much fluids my child is taking in. Overall this is the best cup we have and a favorite for all of us.