There are a bunch of reasons this prototype will fail, but weight doesn't seem like the top of the list. "The seat prototype on show at the launch was a carbon

There are a bunch of reasons this prototype will fail, but weight doesn't seem like the top of the list. "The seat prototype on show at the launch was a carbon fiber, lightweight design -- but the designer insists the wings could be fitted to most existing seats, whatever their material." This article has raises a number of issues. The biggest being increase of turnaround time from the complexity of cleaning, and also problem with the food service tray when wings are deployed. https://thedesignair.net/2019/12/07/interspace-the-new-seat-by-new-territory-universal-movement-challenges-the-usual-premium-economy-proposition-but-is-it-ever-going-to-take-off/ https://thedesignair.net/2019/12/07/interspace-the-new-seat-... I think if these ever make it into planes it will probably be in first class... even though there is little need for it there. Or perhaps in economy if each seat only gets a single wing.