I’d be hesitant to buy anything of the sort off Amazon due to the higher possiblity of fake products. I checked target.com, and I think this is the blue gel, but there’s a handful of reviewers noting burns also.
https://www.target.com/p/old-spice-wild-collection-bearglove-deodorant-3oz/-/A-14898298#lnk=sametab
Depends on how thick/firm they are. My bed currently has 2 thin/soft pillows that sit between my head and the wall, plus one extra firm pillow between my head and the mattress.