I love these cups and I have a bunch of my son that I honestly have had for a long time and they are still in great condition. I got these originally to teach him to drink from a straw because these are rubber straws and I knew it wouldn't hurt him in any way. These are great because they don't leak, the straw gets pinched when covered so there are no spills. These hold a great amount of liquid and I like to the these on the go.