The pillow arrived very tightly packed and I was a bit skeptical. I saw that the packaging had a sticker that mentioned to fluff the pillow when I opened it. I did just that and within a few hours, it fully expanded. I slept on it the same night! I really like it and it's way better than my old, polyester pillows. It seemed a bit firm at first, but once you lay your head on it, it's great!