The Kosmo Sleeper Seat gives first class travellers with Korean Air the opportunity to watch personal audio and video on demand, and includes a choice of over 40 movies and more than 200 music albums. The seat also reclines into a flat bed for those wishing to get much-needed rest on a long-haul flight. It’s unlikely that you’d find this stressful, but the chair also has the ability to massage, just in case.