I've used it on four coast-to-coast trips now, and it's pretty comfy. It takes some getting used to, though. You inflate it only slightly -- it will still be squishy -- which takes only a dozen or so deep breaths. Or you can inflate it from the air nozzle over the seat.
During takeoffs or for short flights, I folded it in half and used it as a lumbar support, opening it fully when I wanted to nap. Before we landed, I furled it into its case, about the size of a travel umbrella. Now, all that's keeping you from shut-eye will be seatmates who want an explanation. I say it's a La-Z-Boy for coach. By Larry Armstrong