I recently bought an Exped L inflatable pillow to match the Exped Downmat 10 XLW I bought a couple of months ago. I did a lot of looking at all makes / sizes before decided on this one. I must say it’s quite good. Two good breaths and its fully inflated. Very comfy and has a nice smooth top to it. There is a smaller one and a larger one in the range but this one is just right. It just fits into the hood of a sleeping bag so won’t go missing during the night. Saying that, there are two small loops ( one either side ) to secure it to a sleeping mat instead. Not the cheapest out there but comes with a 5 year guarantee so should last a long time. It also packs down very small too.
https://www.outdoorgb.com/p/Exped_L_Air_Pillow/
https://www.outdoorgb.com/p/Exped_L_Air_Pillow/