I'm trying to transition my 6 month old, toothless son off of bottles onto sippy cups. I've gotten the ones with the totally solid sippy spout and he refuses to use them. I saw these and purchased two of them on a whim for $2 each, hoping that he'd find it easy to hold as holding his bottle is still a challenge for him, but he can hold things with handles just fine, and hoping that the soft spout would ease his transition.
Well, he did really take to it initially... He was able to hold it, he even took watered down apple juice (a previously hated drink), and asked for it by both trying to reach for it and self-drink with it and by using his word previously used for his bottle. I thought it was a smashing success, but I saw he was positively SOAKED using this cup. I thought maybe he was dribbling it out of his mouth, but watching him use it I saw it leaked very substantially in multiple places... It leaked out the "one way valve" when he tipped it too far, it leaked out of the seams when he tried to drink, and it leaked in a solid stream out of the area where you screw the lid in.
Obviously, my first thought was I put it together wrong, so I tightened the lid which mostly stopped that leak, and I lined up the bumps on the rubbery portion of the lid as was suggested. That did stop the leak mostly (it went from a steady stream of huge drops to just a little trickle), until my son dropped it. Then it leaked again and required me to fix it, again. I figured maybe with constant supervision it'd be OK, so I just kept fixing it and giving it back. However, my son started getting super frustrated with it. He wanted it, would pull it to his mouth, but he acted like he does when the nipple on his bottle was clogged. Sure enough, when I took it back and gave it a squeeze, the amount of juice he got out of it was actually less than what he'd get from his "slow" bottles. Figuring the cup was already a disaster and had nothing to realy lose, I widened the hole a bit. The amount of juice he was getting was far more reasonable and less frustrating for him, but then I noticed the new issue that if he gummed it at all, the rubber portion of the lid would pop out of place and it'd leak again.
Being the glutton for punishment I am, I tried the second cup thinking perhaps there was some sort of leak or seal problem on the first cup, making it defective. If that's the case, then the second cup has it too because the results were exactly the same. Sticky, soaked, screaming baby who got almost none through the spout when he tried to drink. He really did at first seem to take to it, but by this point his clothes were dripping wet and he was frustrated at getting too little to drink and the constant taking it away to fix it so any point in training that this cup would have provided was totally gone.
I'm going to try and return them or contact the company for replacements... I've bought Munchkin stuff before and have always been happy with the quality I got for the price. But these cups... Honestly, the cups that I bought at the dollar store were a lot more functional than these cups were and if he'd have taken to the hard spout, I would have relied on those over these any day. A little leaking I can understand and tolerate, but this was liquid pouring out of all areas like there was nothing there at all. Such a bummer because he really took to it and if it had worked even remotely as it should have, I'd have run out and bought 10 more.