My son has been wanting one of these for a while, every time the commercials came on I would hear it. When I seen some at my grocery store I decided to buy one. It was time for my son to get off sippy cups but it seemed whenever I gave him a regular cup he would knock it over. Wow Cup used that in their commercials, "this is a good cup for kids who spill". Ha ha, they were talking about my situation and I was sold.
I saved on the shipping by buying it at the store for $9.99 I like that it is BPA Free and dishwasher safe (even though I don't have one, places I visit do so I can put it in one if I need to). It is easy for him to hold, however I think it could hold more. Its deceiving because you think you have the whole cup for liquid but you don't.. There is a max fill line that is about and inch down the cup. It's not much of a problem. The way you drink it is kind of weird at first, since you have to suck as you tip it. When using a normal cup you don't have to suck like you are using a straw. My son figured it out real quick.
The way the lid goes on seems weak but it doesn't spill and hasn't come open yet. I will not be holding it over my computer anytime soon, testing it over the floor is just fine. My son loves to show me and everyone that will watch that is doesn't leak when upside down.
Cleaning is easy enough, no worse then a slippy cup. I say that because you have to get under the valve.
I could only find the blue and pink cups but I see on the internet you can get other colors. I also seen online that you can get replacement valves, I wonder how long they last. I would think for a while. We will see, my son will put it to the test. I am going to get at least one more, just hoping my store will get some other colors so I don't have to pay for shipping.
* Update: After using it for a while longer I have found lid to be hard to keep clean, you have to soak it and really work to get the little holes clean. And, if you leave juice in in to long it starts to smell like its fermenting. It still can be a good cup but you have to keep an eye on how long it sits and wash between each cup of liquid. I am not going to be buying anymore of these WOW Cups.
