Weighted Straw Sippy Cup Conversion Kit, Compatible for Comotomo Baby Bottle, 5 Ounce and 8 Ounce (2 Packs, Pink)

I bought these because they fit with our comotomo bottles, and used them while transitioning off of bottles. It took several weeks for my baby to adjust to the cup and the thick straw, but she is now able to use it well. The straw comes apart into 4 pieces which allows for a pretty thorough cleaning, but I find that the plastic top has a lot of nooks/crannies where milk gets stuck, builds up a residue, and sometimes requires a Q-tip to clean well (We don't have a dishwasher, so I don't know if that would work better). When I first started using the cups, I found it difficult to get the sealing ring in place to prevent leaks, but now I've gotten the hang of it, and we haven't had any leaks in a while. Overall happy with the purchase, but wouldn't necessarily recommend over another cup.

The sippy cup adapter works really well looks like it came along with the original Comotomo set up. It takes a little bit of getting used to because you have to bite the straw and the babies were not able to do it the first few times. My only real complaint is that it doesn’t really work with the 5 ounce bottle because the straw is a little too long and unless the water is completely full you can’t get anything out. Other than that great product would recommend!

The product is easy to clean, but for somehow the milk ends up getting stuck for 1/3 of the time, and we had to pour the milk into a different bottle for the LO.

Pink strings don’t stay, that’s the only problem but everything else is great,

Was a little hesitant to buy these as there were some negative reviews and leaking complaints but we been using them every day for over a week and have not experienced any leaking. The straw also seems easier for my little one to use than her other nuk straw cup. I’m so glad I can put our ComoTomo bottles to use longer than previously anticipated! This was a great buy, I’ve already ordered more :)

It's that time when my baby will have to say goodbye to her bottle. But this sippy cup conversion kit will make the transition go very well. Its very simple to install. The handle part goes in first, then you just connect the "any angle straw" to the spout nipple, then just screw in the spout nipple to the top of your comotomo bottle and you are ready. Very simple to install, clean and use. Hopefully, your baby will have a very safe and comfortable experience transitioning from bottle to sippy cup.

These keep leaking after a week of use. The little cover to add air into the bottle pops of so easily and thus causes a leak. The straw is very hard to clean and I have already ripped one trying to clean it. I do like that this is a sippy cup that can be tilted or not.

Used como tomo bottles for 3 of my 4 kids and wish I would have found these sooner. As some reviews mention they do leak. But no more than any other soppy cup I’ve ever owned so I can’t complain. My 7 month old had no problem figuring out the straw and quickly adjusted to the flow. These are fabulous and I plan to use them more as we break my daughter from the bottle.