"Airplane seat designer Alejandro Núñez Vicente reckons his double-decker airplane seat could revolutionize budget air travel.
...because the other level of seats are directly above me and in my eyeline, it feels pretty claustrophobic. But if you don't mind tight spaces, and you're planning simply to sleep all flight, it could be an effective solution." https://edition.cnn.com/travel..../article/chaise-long