We use the MINUI Handi Sitt. Its fitted the chairs we have used it on so far from hotels to restaurants. You can get a tray I believe but Ive not bought it. I find it better to hold the food in the bowl myself and either hand DD (8.5mths) her food or spoon it for her. It gives her quite a bit of movement so she can talk to Daddy and I but equally Ive felt she's very safe in the straps and that its secure to the chair.