I have been looking for very full and fluffy pillows that don't go flat the second you lay on them forever now. I have tried almost every type of fabric and fill to no avail. I decided to try these since they claimed to be "density" pillows and wow, i am impressed with a pillow for the first time in years. i purchases the extra firm, a little wary they might be TOO firm and may hurt my neck but i was wrong. they are very full and fluffy but also incredibly soft. when you lay on them you sink right into them but they do NOT go flat, at all. even when i sit up in bed on these for long periods of time, when i stand up, they fluff right back up and hold their shape. i am ordering another set, possibly 2 in case i can not find them again. highly recommend if you want a full, fluffy, soft pillow that does not go flat when you lay down on it.