Every parent knows the nightmare of your clean kitchen being systematically destryed by the toddler who thinks it is hilarious to throw their bowl on the floor. If you have no yet experienced this joy of parenting, your time will come. You can avoid it by getting these bowls. They stick to the high chair tray so well, that sometimes even mom has a hard time getting it back off. That's not to say they are perfect. An occasionally extra-determined small set of hands may get it loose, but they usually give up way before they manage such a feat. I have searched high and low for a product that works this well, and paid much more for bowls that end up separating from the suction ring. These babies stay together. They also come with lids for travel and storage, which is always nice. You can't microwave them, but you can stick them in the dishwasher.