Due to reflux, I have always slept with my upper body elevated for many years. **** I used my normal pillow and my discarded nursing pillow for this purpose. I often had to readjust it at night, because as a side sleeper (at the time) I got everything mixed up. And every morning I still slid down so far that I was almost lying flat. I've been using the wedge pillows every day for a year now. I can always move them around to change my position slightly. As I have a hollow back, I also use a small pillow for my lower back and can actually sleep wonderfully. At first I had to get used to the fact that I can only lie/sleep on my back on it. As I am currently only allowed to sleep on my back due to an operation, I was able to afford a second set of wedge pillows (because the prices are currently reduced). This is now in the guest bed at my mother's, who I often visit.
Suggestion for improvement: As I use the pillows every day, I wish there were replacement covers available to make washing easier.
I couldn't upload the video here because there wasn't enough storage space. I have therefore uploaded it to YouTube. Sorry for the quality.