Does it leak when the kid is not on or if its on its side (again without a lid)
1604739
Not sure I understand the question. As long as the lid is screwed on, it does not leak but, obviously, if you remove the lid and turn it on its side the contents will pour out.
1604740
Unfortunately, on mine, with the lid on, mine does leak when it is tilted on its side. They need more of a silicon plug at the end of the cap
407497
No it does not, but it is heavy enough and so generally stays in place. I have had no issues with water leaking from the sides.
1188295
It won't leak if you don't overfill it. If you fill it too full when you close it the lid will leak the small amount that was outside the inner plug when it's closed, but as soon as that is gone it doesn't leak. This mug is great!
1290783
With the cap on, I've never had one leak. Used them for two children, never a problem.
1405146
As long as the lid is on all the way and the flip top is snapped down, there is no leakage.
636585
Yes it does and is tight. It does not leak as long as you don't hold it upside down. We've been using this kind for 12 years now and never had any leakage or spilling problems. Very happy with it.
1157007
It doesn't leak if that's what you mean. I have been very happy with it, it's very big so can fit lots of diapers
638157
The lid snaps down and should not leak. (Haven't tried it, though a bucket with guck in it shouldn't tip over.)
682277
Yes it stays on well. I've turned it upside down and it doesn't leak. Just make sure it's on properly.
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
381778
The straw lid does leak. It is really designed to be upright. It's the one downside.
1387637
The lid is screwed on, not snapped on. My wife and I use it for salad dressings in our lunch bags. It doesn't leak when tipped over in a lunch bag. (even vinaigrette or Italian dressings)
1123253
We have not had an issue with it, except for one time when my daughter did not put the lid on correctly (wet bookbag, homework, a huge mess!). If you can sit upright it's safer but if you practice screwing on the lid with your child it should be fine.
353206
No problems here. The lid, if shut fully, does not leak on the one I bought.
462195
I found that they sometimes leak if left on its side but if you shake it it doesn't leak.
160126
As long as the lid is secured it does not leak, it is very sturdy and it do not come with a straw
370909
Yes, it does leak when the straw is out and the bottle is tilted. I had the munchkin ones that don't leak, they seem to have a stopper at the base of the straw that only opens when the baby starts drinking but the bottles are small about 7oz size I think. I like the OXO bottle though, because it is big and the material used is different compared to other bottles