We have booked the "Extra Space Seats" on a Tui Boeing 737 for extra comfort and they are at the emergency exit. We have since been told that the seats will be shorter width than the standard 17.2 inch seats as the tray is kept in the non-moving armrest. I rang Tui who didnt appear to know so I rang the welfare dept who said they are actually 1.5 inches wider than the standard seats which is why they are called extra space seats. Everything else says the opposite though. Does anyone acually know the exact answer....how wide is the seat width on a Tui Boeing 737 Extra Space Seat??! T.i.a., Sophie xx