Lifefactory Sippy Caps for 4-Ounce and 9-Ounce BPA-Free Glass Baby Bottles, 2-Pack, White

Pretty useless, seem to leak everytime we use them.

I mean, remove the silicone insert or nothing comes out! Lol these aren’t spill proof but they don’t leak when used upright or while drinking if that makes sense. If you turn upside down they will trickle water out as well as if they are on their side. These should be used with supervision if your child is like mine. He gorilla slams his bottles and he loves to pour water onto surfaces and even spit/leaks water out of his mouth onto his shirt so much I could die! But yeah it beats metal or plastic bottles. I prefer that it weren’t a plastic Sippy cap, but I can’t find anything better. The bottles hold up under pressure and all wash easy! Good luck!

Babies drop things, even the most well behaved ones do. Crack very easily and then they are useless. Should be better made since this is a baby item and expected to be dropped at one point or another. They leak without the plastic insert that comes with it. Company does not stand behind their products and did not honor their warranty and expects you to repurchase.

I have found most bad reviews are not my experience, so I purchased. Unfortunately the negative reviews of this item are correct. They do not stand up to falls. My little dropped this one and it cracked. In regards to leaking, there are rubber inserts but despite reading and following the directions on tightening or loosening the cap to adjust flow, they did not work and I had to remove the rubber insert. Of course without that, milk or water can easily flow out. I didn't mind because we are only using them for milk and don't allow her to walk around the house with these bottles, but one crash to the kitchen floor and fail, sippy cap broke.

I've never written a review before, but I had to these were so bad. These are cheap garbage. I was really looking forward to simply buying the sippy cup caps after loving using the baby bottles... but even I couldn't suck anything out with the silicone stopper in the cap. When I took the stopper off liquid would come out, but of course now just spills everywhere. The company should just discontinue this product option if they can't come up with a functional model. It really got my hopes up. It's not even worth the hassel of trying to return it.