is this leak proof for a lunch box?
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
524041
At times water may have leaked a tiny bit, but that may have been leftover from filling it. If it were me, I would trust it in a lunch box.
524042
I don't know about in a lunch box. I have four of these total (three year old twins), they get used all the time and the only time I have ever seen them leak was when my son shoved the mouth piece down into the thermos. They have been closed and thrown on the car floor and nothing leaked out.
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
524044
I bought two of these and have found that after very little use, that when you close the lid the bottom plastic part pulls away from the bottle breaking the seal and this leaking. I would not recommend for a lunchbox in my experience.
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!)
1530840
It is leak proof as long as you put the tab in the "lock" position, and have it assembled correctly. I throw mine in my backpack and the only time it leaked was when I forgot to lock it.
875382
I've used this for a while now. It's never leaked though I use ice packs. It's a great lunch bucket.
1255743
Yes. I have found these containers to be leak proof. I was pleasantly surprised to see how much food they can hold. So far, they have held up nicely, and I use them frequently.
1348861
I haven't tried that yet, but if you seal the lid on tightly (and there is a trick to doing that) I suspect it will not leak. I suspect the biggest problem will be when the plastic lid starts wearing out and becoming more brittle. Then it may start leaking.
1456313
The bottom container is closed air tight but not leak proof. If you need air lock and leak proof bento then you can find the bento bowl sold on Amazon. Look for pdn9 and kpdn6 (Japanese 2 Tier Bento bowl). You read anti-leak in feature listing. These bento bowls have screw top cover keeping it air lock tight :) Thank you. Comfort Loft
2098077
I wouldn't say any piece of Tupperware type storage is leak-proof but I am impressed with the quality and sturdiness of the lunch box. Additionally, I think the fit of the lid to each individual box is about as close to leak proof as I have ever come across thus far. And the ice pack in the middle is a great idea as well! My four year old gets it apart just fine on his own.
329841
Yes. We used it for milk and it did leak after a couple of months because the gasket did not stay tight. However, for things like cottage cheese and yoghurt, it was fine.
688510
It is not leak- proof. I think salad dressing would leak. I would put in a separate container.
164631
I have never put liquid in these containers so can't really say if they are leak proof. I have used them for grapes and cut fruit pieces and they have worked very well. They do close pretty tightly if that helps. Fortunately my now 8-year-old daughter has always been able to open these containers herself.
81090
The 0.31L rice bowl and 0.2L soup bowls are leak proof. I have used them both for stews, sauces and soups with no mishaps. The warming tin also works well to keep the temperature. As for the other containers: I have used them for things like fruit salad and other wet foods, the fit of the lids is very precise and I have had no leakage to report.
718770
While it does have a tupperwear styled lid inside, I would not consider it leak proof. Also, there are no separators inside.
1667559
It depends on how liquid we're talking. The top doesn't seal nearly as well as the bottom. I had onion soup (homemade, pretty viscous) in the bottom with no leaks at all. If you press down on the middle of the middle divider to seal it, it creates the best seal. I believe they say it isn't "leak-proof," but I'd be comfortable with anything short of actual liquidy soup in it.
1984786
I am afraid that it will, most likely, leak. They don't travel well with liquid in them. In fact, when I do put them in a lunch box/kit, I'll put the cube in a plastic, zip-lock bag. I found more tightly sealed containers at the grocery store.
1722854
Yes, these containers do leak, they are not air tight. Great for non-liquid items however.
2166874
I have not experienced any leaks from the containers while toting in my lunch bag. I try to keep containers with food upright as much as possible but have emptied my bag with a container shifted on its side, etc. but have never had any spills so far (although I have only owned these for about 8 months now). I wash the lids in my dishwasher too, so I think they are designed very well.
640915
Leaking has never personally happened with my set. Not ever, and I take a lot of differing things in my lunch. Maybe the other folks are overfilling their containers--maybe don't fill it up to the top? But no, in my experience they don't leak.