It worked for us from the very first moment! Countless drops, no breakage or leakage. It doesn't accept replacements, but I think it's good for plastic products to be replaced after a while because, no matter how you look at it, these are microplastics, and everyone claims they are completely safe. Thorough cleaning is essential (the included brush-wire makes it easier). Regarding the flow, when the valve is closed (meaning the straw is snapped in from below), there is no leakage, and swallowing at any angle is possible and safe. Yes, in this case, it is more difficult for the child to suck, or to put it more accurately, it is controlled and trains the child in suction. Now that our little one has grown, we personally have "unsnapped" the straw from the slot under the lid, and the flow is free. However, be careful because in this case, leaks are not prevented if the cup is on its side or turned upside down!

It retains odors, does not clean easily, and after a short period of use, it starts to leak. Perhaps the rubber bands loosen, there are more high-quality and affordable options available

I saw the very good reviews and I bought it. The child, while drinking from other cups with a straw (13 months old), cannot suck from this straw. Neither can I. Unless we received a defective one

It easily drips, easy plastic for grip for small hands. I do not consider it worth its money.

Very good! The little one, 13 months old, found it on the first try, after other failed attempts with other sippy cups with or without a straw. The only drawback is cleaning the straw (difficult)

We got it when the baby was twelve months old because whatever we had tried before, he couldn't drink on his own as we had to lift it for him every time. With this cup, he learned to drink water on his own and even a lot. As for what some people write about it dripping a little, I noticed and saw that it only drips when a "valve," let's call it, on the inside of the lid comes off. So I keep an eye on it and fasten it when my little one throws the cup down. I have two negatives to mention: 1) the "teeth" on the lid broke very quickly with a few tumbles of the cup, which is not the best in terms of hygiene. 2) the bristles on the accompanying brush for cleaning the straw wore out very quickly. Now it has caught dirt inside, so we will get the same cup again without thinking.

My son simply loves it. Since we got it, he doesn't want to use any other of the 3 different ones I have for him... We have had it for 8 months now. I would definitely like there to be spare tips for it, hence the 4 stars.

Easy to use and clean. It doesn't leak as long as it is closed properly, even if it is turned upside down.
My child drinks water and juice, but refuses to drink his milk in this. Maybe it's because he finds resistance in the straw and doesn't have patience when he's hungry