yuboo Silicone Sippy Cup Lids, 5 Pack Make Any Kids Cup Spill-Proof for Babies and Toddlers

I wanted these because the my son was not ready for some of the lids that came with stainless steel cups. It is nice to re-use the existing cups and I have not seen them leak at all. I also have not had a problem with my son removing the lid. They are a little hard to put on. I think that the water will come out faster than a regular "sippy" cup.

Finally can get rid of the dozens of kids that fit only one cup. There is a slight learning curve for stretching them over a cup but once you get it it’s easy. Helpful hint use when dry and your hands are dry as well for easy placement.

These are of course cute which is why we tried them. However, I prefer the Boon version for a few reasons. First these are pretty small diameter and don't fit all cups as others have noted (boon are bigger) second cuz they're small they're more likely to rip on the seam, which one of these did on the first use with an Ikea plastic cup. We've had our Boon's for 2 years without fail/incident

These are great kids, just a little hard to get on the cup. However, I guess if they were easier to get on, they’d come off or leak. I’m using them with the Tupperware brand cups. Overall I’m happy with these!

These pair perfectly with the 8 oz double walled, stainless steel cups. Just make sure the outside of the cup and the inside of the lid are very dry. I will buy these again.

I like that I can use these on any cup if I need to and my 3 & 6 year old boys luv them. Happy kids = Happy mommy

I previously purchased the Boon brand and loved them. I was looking to save a bit of money so I went with this brand. They at much smaller in diameter and do not fit very many cups. This makes them harder to use. They do their job and I’ve jept them but they sit in the back of the cabinet and are only used as my last resort sippy.

These are total junk and dangerous. I loved them for a few days then I realized all the issues. They work well on both plastic and glass Avent bottles. I was looking to transition my toddler to supply cups and thought I would use these to repurpose the bottles into cups. These lids stay on both glass and plastic Avent bottles & cups like camelback kids cups if the liquid in the cup is room temperature. However if the drink is cold, like milk, the lid will go on snug then slid right off when the cup gets moisture on it from the cold liquid inside the cup. I found this out the hard way when an ENTIRE 8 Oz cup of chocolate milk spilled everywhere when my daughter tried to drink the milk! Not fun! The slit in the lids for the liquid to flow through split way open immediately—1st or 2nd washing. So then there was a huge gaping hole which caused the liquid in the cup to come out very fast which then went all over my toddler due to the very fast flow. After about 2 months, my toddler was drinking her milk beside me and handed me something, it wa the entire end of the spout she was drinking out of. She could have CHOKED! This product is dangerous and very poor quality. BUYER BEWARE!!!!! Amazon should remove these products, at least by this brand, due to the choking aspect. It’s marketed for young kids and it is a danger to use these lids with kids. I took pictures then trashed them! See the pictures....