This pillow is a boon for people with cervical, sinus or acid regurgitation. It is very comfortable, solid quality. Only thing is it may take 2-3 days for you to find an optimum position but once you find it you will not want to use anything else.
And it is especially good if you want to watch a movie sitting on your bed, I haven't found a better "Back-rest" than this in my whole life (...and I am 48 yrs old). Plus, they give a 101 days trial period. So nothing should stop you from buying this even as The Best Back-rest pillow. Do take their chat option to know which size will suit you best !