The seat is fine as far as it fitting the chairs and it's nice that it has a cupholder so cups don't slide.

It's the tray! The thing is sooo tiny I can not even get a small plate on it.  It would work fine if you want to put ALL your kid's food right on the tray but sometimes you want them use a plate.  A bowl will fit but even then it's close to my daughter's stomach,

It causes spill after spill of food and drink.  It's a terrible design and does not provide enough room to function properly.  We have had enough and are going to get rid of it and buy a new one.  It's a shame but the design...