Does this leak at all? Can I toss it in my bag and not worry about it leaking?
616500
It does sometimes in different altitudes and when you don't push the lip close
1598420
We haven't had any problems with leaking if the lid is on right. And if you are sure that the rubber little sip lid is closed all the way down. But, we don't usually put it in a bag because some of the reviews said theirs leaked all over. It has been upside down quite a few times though and never leaked. but for some reason this particular bottle, and only this particular pink one (we have a few), has an issue with the lid going on straight. I have to check it every time we use it to make sure it's on right and it often times takes 2 times of screwing it on before its on right. But that's not a big ideal. Overall a good bottle. We haven't had any problems with leaking if the lid is on right. And if you are sure that the rubber little sip lid is closed all the way down. But, we don't usually put it in a bag because some of the reviews said theirs leaked all over. It has been upside down quite a few times though and never leaked. but for some reason this particular bottle, and only this particular pink one (we have a few), has an issue with the lid going on straight. I have to check it every time we use it to make sure it's on right and it often times takes 2 times of screwing it on before its on right. But that's... » Read More We haven't had any problems with leaking if the lid is on right. And if you are sure that the rubber little sip lid is closed all the way down. But, we don't usually put it in a bag because some of the reviews said theirs leaked all over. It has been upside down quite a few times though and never leaked. but for some reason this particular bottle, and only this particular pink one (we have a few), has an issue with the lid going on straight. I have to check it every time we use it to make sure it's on right and it often times takes 2 times of screwing it on before its on right. But that's not a big ideal. Overall a good bottle. « Show Less
672445
I do not live in such a climate so I am unsure. I haven't had a problem with leakage though, I travel alot!!
1060613
I gave this as a gift, so I don't fully remember, but I believe it is fully insulated/lined, so it shouldn't leak.
1901762
No leaking issues, travelled to Jamaica with it. p.s. you could always put it in a ziplock bag.
353204
No it is not. You will have a wet bag guaranteed. A better option is the Nalgene OTF bottle. It costs a bit more but won't leak. Just remember to take out the little rubber stopper and wash it every once in a while. It tends to mold.
1500540
I've had mine for four or five months, and no sign of leaking. It seems very sturdy. Hope it lasts a long time. Very comfortable
2062412
I take mine everywhere but in a plastic tote bag because I believe if it is turned over it might leak.
257463
Doesn't appear to leak at all. We absolutely love ours and have had it for 7-8 months now I think. Very heavy duty and great quality.
199679
I have never had one leak. We use for lunches. I have taken them on carry on luggage.. I guess a thermos is another possibility.
1598418
Mine doesn't leak in my bag while walking. In a bag while chasing my preschooler it almost always leaks, so it depends on the activity.
683265
I have used mine extensively and have had no leakage. Here's an idea - if you are concerned about ruining a $1k+ laptop, go to Target or walmart and pick up a box of the HUGE ziplock bags and put the bladder in the ziplock bag as a secondary barrier. Hope this helps...
1562045
I purchased two to take with us to Soth Africa and Botswana.I gave one to my wife and kept one. On the flight tp South Africa mine leaked a black oily substance onto my clothres in my checked bag. On the flight back it leaked a white viscus gel. Wiser by my firest experience I placed it in a plastic bag to protect my clothes.My wife had no problem with heres. That may be because se kept hers with his in her carry-on bag. Both worked and I'd have no reservations about buying one unless you plan to fly with it.
60910
I've checked it in luggage a few times without issue. Not carry-on though. I put it in a ziplock back in case pressure were to cause any leaking, but I do that with all liquids in checked luggage.
1467447
I use it with ice packs most of the time. I also used it with ice that was contained in a Ziploc freezer bag so I never had a problem with leaking.
262789
It's not going to work in the water, of course. Since I have carried in rainy day for few times, I haven't experienced any leaking so far. However, you may ask others, too. They could have different opinions. At least it has worked for me.
1511133
The gel is a bit liquid-like, so it may leak out of a bag, but if you put it in small plastic Tupperware/Rubbermaid packages and put pinholes in the top, it would work and not spill out.