The BUMBO seat is wonderful, but the Tray is AWFUL...a true waste of money. It is surprising that the same company created these two products. Getting the tray on is a little tricky, but that is not the problem. The problem is that the tray comes off with just about any movement. So, unless your infant sits perfectly still at all times, avoid this product. And I don't just mean fussy type movements...ANY movement can knock the tray off. If my 7 month-old slightly lifts her leg, off it comes. One wonderful thing about the seat is the lack of straps, but the same cannot be said about the tray. It definitely needs to be secured in some fashion. Once my daughter realizes it is off, she grabs it with both hands, and it becomes a large and awkward toy. I think there are better "toys" on the market, so since that is all it is good for, I'll be returning it tomorrow. Save yourself the trouble and just enjoy the Bumbo seat as it is.