These lids are great! They’re a little difficult to put on at first, but they work like they say they do! Great to keep in my purse having three boys who occasionally knock over their lidless cups! We also have a dear friend who has Parkinson’s and I plan to give her one of these lids to keep in her purse as well – she will just have to have someone else put it on for her. **An adult will have to put these lids on, they’re a tight fit – but that’s needed to make them work as well as they do! Also, make sure the outside of the cup is not wet, it won’t fit correctly if the outside of the cup is already wet.
You can purchase the lids here: http://www.amazon.com/dp/B01E0TD9W2