I’ve been using these cups for years with my toddlers. We actually like them for a first cup for my breasted babies as they can figure them out pretty easily. My 11month old and 3yr old both love them. It’s nice that they come with a nipple cover for going out and about. I will say that I wish the nipple were a bit more durable (see photo) but these are used daily and put through dishwasher so they definitely get a ton of use. They are not spill proof but limit spills considerably compared to a normal cup without compromising too much. Super easy to clean with no hard nooks to reach. I took off a star for the pictured torn nipple that seems to happen to every one after a while but we do love them and will likely purchase again!