They can b comfortable but also uncomfortable it’s hard to describe maybe because I got the large ones so they so big on my bed and harder to sleep with the memory foam does feel good. It is thick and full type of pillow but I think I’m sure to pillow that you can bend up and sleep with idk exactly but their made out of good fabric and material though. They come flat flat but once u take them out they will expand on their own as they sit there give them about 30 minutes to do so.