The seats recline enough to function as a bassinet for a baby, and they lift to full upright position for older children. (strollerlab.net)
They feel that the seat is still to reclined at full upright position. (stroller-envy.com)
You'll still have to bring your seat backs and tray tables to their full upright positions for takeoff, but those seatbacks are cushy leather and those tray tables are a respectable distance away from your knees. (businessinsider.com)