They are a little tough to get onto a cup but that’s why it seals well when you do get it on. I just got my husbands help to get the silicone lid on and it works great for my 2 year old (who is always making messes LOL). These lids are nice but I don’t think they will work for every cup as I struggled to get this on a toddler cup, but it will work awesome on all of the cups I use for my kiddos so I can now turn any of my kid size cups into a sealed cup for my 2 year old to avoid lots of messes.
This set is a nice set for me and I recommend it will work great for mason jars and small kiddo cups to seal them (and then I just used disposable straws I had at home as this set doesn’t come with straws).
–I received this product on a promotional discount or for free for my honest review and they are 100% my own opinions and pictures from my own experience with this product. I received no compensation for this review and I am in no way required to give a good review. I am also not associated with the seller in any way.–