I recently had bypass surgery and needed something to prop me up like a hospital bed while I recovered. My daughter checked Walmart and found this large wedge pillow. It only has one set angle, but I just add extra pillows when I want it higher. This wedge really did the trick. It's firm, super supportive, and lets me sleep comfortably without sliding around. I set it at the top of the bed and it stays put. The zippered cover is a nice bonus and should make it easy to keep clean.
Walmart's delivery was fast, which I appreciated. The wedge keeps my back and head raised just right and honestly made those first weeks so much easier. Now that I'm feeling better, I use it for watching TV and it works great for that too. The price was definitely a plus.