Lifefactory Sippy Caps for 4-Ounce and 9-Ounce BPA-Free Glass Baby Bottles, Kale

These caps are good for toddlers. I love life factory bottles so they are good to use on the bottles after the nipple top phase. The only issue is that if my toddler drops the glass bottle.....the bottle itself holds up but this cap will break. Otherwise these are good.

My little one broke both of hers in the first month or so.... the glass bottle is fine! Just not the tops :( I love this product but until my little one is older, I had to switch to a stainless steel bottle. Also, sometimes you have to check if they are getting any liquid when you have the insert in it to slow down the liquid, it gets blocked up sometimes.

These are terrible bottle caps. I have ordered them 5x in the past two years (that’s ten caps), and every single one has broken. They haven’t gotten lost. They’ve cracked and become unusable with the slightest drop (my two year old, like most, isn’t tall.) Amazon, kindly, has replaced 1 set, but of course, I had to call customer service and go through that rigamarole...would rather the caps simply not break. We do have slate floors, but they are only sometimes the location of the fall. Almost any drop on any floor save carpet can crack these caps, but the bottles survive. In fact, we’ve only broken and replaced ONE bottle compared to the TEN caps. And that’s because it fell from my shoulder height while I was carrying my son over the slate floor. Needless to say, it’s pretty pitiful how easily the caps break. I suspect it’s because the plastic is BPA free, which I appreciate and is one of the reasons why I keep buying them. The other reason I’m beholden to this awful cap is because my two year old latched on to this particular bottle brand as his lovey— cute except now I’ve spent $45 in caps alone and need more so he can sleep tonight. Please send me more, Amazon. And please redesign these, Lifefactory— they are the worst. I wish I’d saved and photographed each one: they break almost the same way in a spiral every time. I even finally bought another color (kale) to see if it was intrinsic to the blues. Nope. They all do it.

I really like the life factory products because they are glass and USA made. I’ve had these caps for a few weeks now and I noticed one already cracked, I assume from it falling off the table. Really bummed about that especially for the price to replace.Be mindful, they do leak (even with the valve) and I tend to use them without the valve that’s included because my baby has to suck way too hard to get anything out. The slit in the valve is extremely small.Overall I still love Life factory products over anything else on the market for babies and toddlers.

I researched these caps for several months before actually taking a chance and getting them despite all the negative reviews. I have had no serious problems with them. I’ve had the caps for over a month now and they have been washed over a dozen times, no issues! In my experience all sippy cup lids/caps “leak”. For the most part these do not unless my child leaves a little liquid in the spout of it. I’ve had bottles laying on their sides or upside down for quite some time and no leak issues. There is a rubber type valve in the cap, some reviewers have stated that they removed it I did not. This is what helps the caps NOT leak. When you take the rubber valve out of the plastic cap the top of it has a small slit in it. While washing them before 1st use, I pinched the opening of it to kind of unstick it. When I put it back together I sucked through the cap to see if it had an easy flow & it was perfect, my toddler has no issues. It might make more sense if you purchase them. All in all, I’m super happy with my purchase.

These helped my child transition away from the bottle nipple. Though, broke easily when hit against a hard surface. If your child likes pouring water out of their bottle, they will like this. We weren’t able to figure out the anti spill gasket so didn’t use it.

I don't use the silicone inner, but if you leave the bottle lying on its side then it will all leak out lol. I still love the lids. They are to prevent spills.

I'm giving this product 5 stars because this is the only glass sippy top that my twins will use. I have read in the other reviews that these tend to break, and I have had some break. After a few broke, I e-mailed the company and received a response addressing my concern first thing the next morning. I learned that if you do not over tighten them, when the bottle falls or is hurled by a toddler, the cap is much less likely to break. I had previously been over tightening the lids for sure. I did take the silicone piece out because it doesn't seem worth an extra thing to clean. Perhaps this advice will not be popular, but I have found that addressing the issue of my twins not throwing the bottles is a battle worth fighting. Getting hit in the foot by a dropped bottle hurts! I will continue to buy this product to extend the life of the glass baby bottles.