I got rid of a wedge pillow years ago because it took up a lot of space to store, so when I broke my leg and needed something I was super happy to find this, which will store well when we are healthy deflated in a closet. It's kind of like a cross between an air mattress and an inflatable pool toy.
Cons: the pump it comes with is indeed worthless, I wouldn't recommend buying this if you don't already have a pump for inflatables. And like an inflatable pool toy, it does deflate with weight so expect to add a few puffs of air a couple times a day.
Pros: it's freaking great. It's actually nicer for icing than a pillow because you can just wipe it dry. I think it's also got more elevation than a pillow. And if you don't need it all the time, just want something on call for injuries or pain, it deflates and stores great.
Bottom line: highly recommended if you only need it for acute short term injuries and storage/space is a premium. If you need something for more permanent/chronic use or live in a big empty house, you may just want the pillow so you don't have to mess around with blowing it up.