We purchased this booster when our 15-month old son was approx. 6 months old. Until this week, it was fine, with the execption of food getting lodged in the strap openings. This week our son pushed on the tray and the t-bar and tray came off. If he wasn't seatbelted in he would have landed on the floor with the tray and t-bar. We reinstalled the t-bar, thinking that it wasn't latched on properly from the previous cleaning, but still the tray and t-bar came off.