Do these lids prevent spilling/ leaking 100%?
572565
The lids have a rubber gasket inside. They are very sturdy. I purchased to go with my CuiZen blender. And it fits perfect.
1053269
Yes, as long as you screw on the tops good, they're leak proof! I've put them in my purse sideways multiple times and nothing leaked out. They're great bottles, the perfect size. I've saved a lot of plastic bottles by buying these.
381779
I purchased two of these lids for both the 64oz Growler and 40oz bottle. Neither of the lids leak on either bottle. I would guess that you may have been unlucky and received a faulty lid, or it was not threaded onto the bottle properly.
720887
I have never had them leak and I've been using them for a year now. I've put fruit in them and the juice has never leaked. I own 3 sets of these containers and love them! Now that my son is getting bigger, I wish they made them in a bigger size.
2277311
I have not had any issues with leaks. My wife hasn't had any issues neither and she uses hers for medicine, make up, lotion and other liquids. She also keeps some in her purse and they have never spilled. She carries large purses so these containers really get bounced around.
930621
I regularly shake things in my jars with these lids and I would say they DON'T leak about 95% of the time. Which is to say that every now and then there is some leakage - I think one of my lids is just "bigger" or sits "looser" than the others.
1722854
Yes, these containers do leak, they are not air tight. Great for non-liquid items however.
2152910
I have never had a problem with them leaking, although I don't specifically turn jars upside down to check.
279567
Unfortunately I had to return mine because I purchased the wrong size however I purchased a similar one from them and yes the lids do seal tightly.
2185351
I'm not sure but I know they don't leak. This is my second time ordering this and haven't had a problem.
1158513
Not really. They will protect against moderate sloshing but will leak if container is tilted to its side.
768314
They seal horribly. Not only will the liquid spill, the lids most likely will fall off too.
2098075
Yes - they are leakproof. If I showed my 3 year old how to open (where to grasp the lid), Im sure she could do it. They are not hard to open or close, but the lid is quite secure.
502938
No. I purchased these hoping I could use them with my Ball plastic jar lids and unfortunately they did not work & my Ball lids still leaked.
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.
1406405
It's a screw top lid and closes pretty tightly. I've not had any problems with things such as spilling or leaking. It's pretty darn secure! Same goes for the lids on the inner tray. They snap into place and I haven't ever had them loosen or spill/leak contents. Even after getting tossed around in a gym bag.
2221722
they are not spill proof. the lids themselves dont leak around the edges but the hole where the straw is is large and isnt a tight fit. my 3 year old uses them all the time- if she tips them they dont spill like everywhere instantly but they do leak.