These work great over jars or small glasses and clean easily.

I bought these for my grandsons and they were an instant hit. They love to pick their favorite color top and straw combos so no problem getting them to use them. One is 4 and the other is 18 months.More > < Less

I originally purchased these to use when the grandson visits, but quickly began using them for other reasons - when the guys were pouring cement in the hot sun and needed cold water, when we took our wine glasses out on the boat, when we are on the go in the RV, etc. Oh, and yes, our grandson likes them too.More > < Less

As a parent of a disabled child, this product not only keeps from messy spills, it provides some “grip” making the glass easy to hold onto.
The only thing that I was disappointed about is that it only comes with one straw. Other straws do work, but the one that comes with it works the best.
I recommend this product to anyone with kids, or anyone with people who just need that extra help keeping their beverage in the glass.More > < Less

I absolutely loved the silicone covers but there was only one straw I looked in the box to make sure