I run a lot and these are always at marathon expo halls, they're Normatec leg compression sleeves. I believe the Centurion Lounge also may have the arm and hip add-ons too! At any rate, these are supposed to be recovery devices for flushing lactic acid and improving circulation but they really do a great job of loosening you up ahead of a (possibly) cramped flight. Even a 10 minute session is worth booking if you've got a longer flight, I just wish you could have a cocktail delivered while you're in there.