Does it leak when turned over?
1076762
Yes! It seems to be a design flaw. The cap over the spout covers the opening, but it doesn't seal it shut.
1076763
Assuming you have the cap on and tightened appropriately, it will hold the water just fine. However if it's upside down and in a bag, there's a decent chance that something will push on the cap's clip/lever with just enough force to open it. Remember, they're meant to open with the force of your thumb, so that's all it needs for something to dump the liquid inside.
1076764
Yes it does (actually have it in hand and make it leak). For my use it's not an issue since I dont put it in any bag (unless restrained). So it remains always in a normal position. It's handy way to open with a single hand and protected from dust bottleneck is precious on a bike ride especially on dusty busy roads.I remember my old (lost), one hardly leaked. I don't know what happen to the quality. But the design remained unchaged since the 199x patent (I have a copy). Although a little modification would improve, even make it unleakable. I have a Thermos Tritan (same name yes, check with Google) not as easy to open, that doesn't leak at all. Yes it does (actually have it in hand and make it leak). For my use it's not an issue since I dont put it in any bag (unless restrained). So it remains always in a normal position. It's handy way to open with a single hand and protected from dust bottleneck is precious on a bike ride especially on dusty busy roads.I remember my old (lost), one hardly leaked. I don't know what happen to the quality. But the design remained unchaged since the 199x patent (I have a copy). Although a little modification would improve, even make it unleakable. I have a Thermos Tritan (same name yes,... » Read More Yes it does (actually have it in hand and make it leak). For my use it's not an issue since I dont put it in any bag (unless restrained). So it remains always in a normal position. It's handy way to open with a single hand and protected from dust bottleneck is precious on a bike ride especially on dusty busy roads.I remember my old (lost), one hardly leaked. I don't know what happen to the quality. But the design remained unchaged since the 199x patent (I have a copy). Although a little modification would improve, even make it unleakable. I have a Thermos Tritan (same name yes, check with Google) not as easy to open, that doesn't leak at all. « Show Less
959854
Yes. With the stopper in place it will not spill. We have taken the stopper out of my son's cup , so if it is laying upside down it will spill out.
798009
It screws on. When I turn a full bottle sideways (which I've done only a dozen times or so), no water leaks out.
133058
Did not leak on me, but I kept it level and did not turn sideways in my lunchbag. Fairly tight seal, but if jossled too much might pop off.
1314461
No, not if it was left upright. It has a hard plastic liner inside so it won't leak and makes it easy to clean.
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 :)
194786
No, it doesn't leak. It hasn't caused any trouble whatsoever. I like it a lot.
1558024
There is a little drinking slit and that is never closed - so it would leak if turned on it's side or upside down.
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
524043
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: OXO Tot Twist Lid Water Bottle for Big Kids (12 Oz) - Aqua
2011489
Mine does not leak at all, I think. Really like it and recommend. Easy to install
1982888
I have held mine upside down without any leaking. If you manage to somehow press the button while turning it upside down, it will pour out.
698098
No, only if the bottle is upside down it leaks out. But have not had any other problems with leaking. Even considering the force i put on them to get the air out. Biggest mess i have had with these was a 3am feeding when i was half asleep..i poured the formula into it before i put the liner!! And if you do use these its cheapest on Amazons subscribe and save.
1641580
No. So if you turn it upside down, it may leak a bit. It's a really great coffee mug and I don't have an issue with the space between the grounds after pressing. It's used almost daily and I would buy this again.
1348864
No, the lid is very secure when tightened. You could hold the pitcher upside down and it wouldn't leak.
134128
Yes as long as the gasket is in place and you completely screw it tight, it will not leak! I've turned my upside down many times or it has fallen and nothing leaked out.
1412412
As long as it remains upright then it will be fine but it will leak if on its side