These suction to the counter or high chair for mess free mealtime. The plate doesn't seem to suction as well as the bowl, but it still stays in place. The bowl stays put for the duration of the meal. I love that it's plastic free. It's the perfect size from BLW into toddlerhood.
Overall I like this bowl. It is attractive and much nicer than looking than the various cheap plastic bowls you can buy at any store, and the suction does keep my son from tossing it on the floor... temporarily. The suction lasts about 5-8 minutes, I would say, so we have to be vigilant about pushing it down periodically to keep my son from picking it up and throwing it.