 Most aircraft also feature trays for eating and reading, either in the seatback which folds down to form a small table in most economy class seats, or inside the armrest which folds out in most first class, business class, bulkhead, and exit row seats.Most airline seats also feature a pocket which may contain an in-flight magazine and safety instructions.On small and short-haul aircraft, or on low-cost carriers, some of these amenities may not be installed.