Yikes, Polyester. How is that supposed to make a well breathing PJ? Of the airline PJs I have, actually I enjoy the current BR (EVA) one they give out in Biz long haul best for material, fit and design / looks (its blueish for male version). They got rid of the a bit odd design of the top of the previous version and material, breathability and all was comfortable. I got a bunch of the old SQ F ones (before Lalique) and they were cotton IIRC, but look very baggy (especially the pants), but at least the arms weren't too short

.