Therm-a-RestAir Head Regular Blue Sleeping Bag, One Size, Blue Woven

Love this - it's perfect for travel, as it folds up so small and you can hook the whole package to a carabiner on the outside of your bag. Easy to inflate and adjust once inflated, the shoulder cut-out is comfortable and the soft material is lovely. Bonus points for the ability to remove the bladder so you can wash the pillow case, which I've done twice now without any problems.

Its the most pillow like out of all the blow up options I have found. Very comfortable and very easy to change the 'inflatedness' and can be reduced very quickly