Does this straw leak when open or is there a valve? My kid likes to leave her cups on their sides (or upside down)
429990
My grandson also left his open all of the time and we never had any leaks. Once he decided to start chewing on the straw and leaving little gashes in the plastic is when it started to leak some. I love this and if I had discovered them while he was still young enough, I would have had a cupboard full of them. They keep cold drinks very cold and hot drinks hot and we even added a clip to it so he could carry it on his belt loop, bike etc!
429991
Hello, I can't speak for every bottle from Eco Vessel - but the one we use for our son does leak if left upside down. It doesn't leak to the point where water is gushing out - it's more like a slow drip. We put it in his backpack during school and if he puts it in the main compartment on its side, it does tend to leak. But other than that, it's a well made water bottle - my young daughter even knows how to sip out of it.
1218590
The little flip part that covers the drinking hole in the top does not seal tightly, so if the cup is turned on its side, the liquid will drip out. As others have said, this is a great thermos if it it stays upright, but if you need a complete seal, get another. Hope this helps :)
533378
Child has to suck to get it out, but not super hard like some sippy cups we've had. However, after having ours for about six months, the no spill valve has broken and it pours out. I could just replace it with another valve, but I probably won't bother since I don't let him walk around the house with it to spill it anyway. We only use ours for water because I'm not fond of things that need a bottle brush to reach inside, I never feel like it gets it clean enough anyway. I suppose you could put it in the dishwasher however, which would be easy enough. Overall, I like this sippy cup a lot and would recommend it as one of the better, if not the best sippy cup we've ever used. Child has to suck to get it out, but not super hard like some sippy cups we've had. However, after having ours for about six months, the no spill valve has broken and it pours out. I could just replace it with another valve, but I probably won't bother since I don't let him walk around the house with it to spill it anyway. We only use ours for water because I'm not fond of things that need a bottle brush to reach inside, I never feel like it gets it clean enough anyway. I suppose you could put it in the dishwasher however, which would be easy enough. Overall, I like this sippy... » Read More Child has to suck to get it out, but not super hard like some sippy cups we've had. However, after having ours for about six months, the no spill valve has broken and it pours out. I could just replace it with another valve, but I probably won't bother since I don't let him walk around the house with it to spill it anyway. We only use ours for water because I'm not fond of things that need a bottle brush to reach inside, I never feel like it gets it clean enough anyway. I suppose you could put it in the dishwasher however, which would be easy enough. Overall, I like this sippy cup a lot and would recommend it as one of the better, if not the best sippy cup we've ever used. « Show Less
1420353
I'm not sure I understand the ?. Of course it leaks when you turn the top. Only load it when the top is tight. Is the silicon "straw" in the center?
1610490
It's a "straw" connected to the lid but it's hard plastic, not soft. It's pretty good for non-spill. I don't think you'll find a completely non-spill cup ever! haha. But this comes pretty close. It will drip liquid if you turn it upside down and shake it though.
521973
No valve my daughter doesn't struggle while drinking her juice or milk. I love this cup especially for my little preschooler. My daughter is only 2 years old and she seems to have no problems with this cup. I also bought matching back pack and lunch box. I say go for it
2086153
I was leak free till my daughter dropped it. It leaks if you leave it on its side now...
381781
I have a 40 oz Hydro Flask with the lid/straw attachment and I have not experienced any problems with leaking while the attachment is in the closed position. If yours leaks, you may have a faulty attachment.
143331
no valve that i see. its just a flexible straw and at the bottom is a little white sphere with a hole.it moves around easily in the cup for easy drinking. my 8 month old took to it quickly and transitioned away from the bottle very easily with this cup. my issue with the cup is that its not easy to clean and it developed mold after a few months despite my efforts to clean and dry it.
370910
No it doesnt leak, maybe a drop or 2, i have the same problem with my kids. It's a good cup for kids.
1087748
If the lid isn't on just right, the seal leaks very easily when the cup is tipped. It doesn't leak much upside down though.
524040
No. When the straw is in the closed position, a little gap opens up behind it so that even when closed, there is a small opening on the top of the bottle. If the bottle is on its side, it will leak. I have found the OXO kids twist water bottle to be more leak proof: http://www.amazon.com/OXO-Twist-Water-Bottle-Ounce/dp/B00ANJIE42/ref=sr_1_3?ie=UTF8&qid=1408022097&sr=8-3&keywords=oxo+water+bottle
1288500
There are no numbers on this one so you have to calculate the amount of water or milk you put on it. There is absolutely no leaking with this sippy cup, even when upside down. They do come with an extra seal if you want to make sure but I have never used those and never had a problem.
1545358
Yes, my first one leaked so I bought another and the second one leaks too. I may return it, or just use them in the car where they will remain right-side up all the time. Also, even when upright if the mouthpiece is open then warming air in the bottle will push a LOT of water up and out of the straw and all over your cupholder area. So if you use it in the car make sure to close it. I'd never carry one of these in a backpack. Water does really taste better though, so I'll accept the limited usefulness.
1062391
Yes. The top twists around enclosing the straw completely inside. No leaks in almost 9 months, and nice that the straw stays clean even being bumped around inside my daughter's backpack.
2010012
There is a valve piece. I only buy these for my two little guys. They are durable and do not leak!
1531581
It's open, but it's still difficult for new straw users. Playtex makes another cup that you can squeeze to assist them and it's much easier.