is it leak proof or not?
1402774
I would not put water inside, but they do have a tight seal for dry snacks. A little difficult for kids hands to open.
1402775
Yes....fine for things like yogurt and sauce-type condiments. Not sure I would use them for oil-based salad dressings though.
1402776
I wouldn't put liquids inside. I haven't... i think you could if you have a sturdy lunch box and you know it won't fall over. The lid can come off easily though. I would not put anything liquid in it in my child's lunchbox, that's for sure!
803702
As best as I can tell, no. I tested with a small amount of water and it didn't leak through.
476450
Yes it is, if closed and sealed correctly it will not leak. I have mixed tea and shaken it and have had it laying down inside my travel bag and does not spill one bit.
1020147
It's supposed to be leak proof, but none of mine are truly soup proof. Also noteworthy: it makes my food taste like plastic.
2069561
This is absolute leak proof. At least so far I never had 1 drop coming out of it!! Im sure you can take it in a backpack.
1277616
No it's not. I have about 5 in my house and have never had any of the leak .
1851240
I would say its about 95% leak-proof when the nipple is pressed down; I haven't had any issues so far, even with it bouncing around on my pack. On their website they call it 'leak-resistant'.
123403
It's fairly water proof. I've spilt a drink inside it before and it didn't leak.
134129
Yes it is leak proof if the thermos is not filled beyond the maximum beverage line indicated inside the thermos. Should you fill it past this point, liquid will seep into the cap when sealing closed, and that excess liquid will leak out when tipped. Also, as another reviewer pointed out, the gasket must be dry, intact and in it's correct position. If these 2 conditions are met, and the cap is tightened thoroughly, you will not experience leakage.
524045
This was my question too... And it seems to be but the real test is starting school next week. So far with use around the house we have been fine! (Everyone I asked or had demonstrate showed leak proof though. This was the best option I found!)
2086153
I was leak free till my daughter dropped it. It leaks if you leave it on its side now...
571646
So far I have not had any leak problems. But I will put it to the test today and let you know.
494376
Yes, it's leakproof and it's awesome. Worth every penny. I bought 2 and had to have two more...
123022
Unfortunately I'm not sure.... I've never spilled anything in it, yet at least. I used it to hold work materials in my truck for work, so I cant speak to its leak-proof ability.
2011489
Mine does not leak at all, I think. Really like it and recommend. Easy to install
1951816
Yes they are leak proof. I bought mine in the Container store and it is labeled leakproof on their shelf. The store sells the 2 oz size for $1.95. I use it to carry my oily lite salad dressing to the restaurant with me and it has never leaked.
2069563
Yes, very leak proof. I carry it in a bag all the time also throw on the seat of car. I own 2, neither have ever leaked when they are closed.