I have to start out by saying I'm a night shift nurse.  Between chronic back pain, stress, & it being daylight outside it makes for a tough nights or days sleep.  I never thought a pillow would make that big of a difference in me being able to fall asleep but it did.  This pillow stays fluffy & keeps it's form.  It doesn't flatten out like a pancake like most pillows do.  This pillow is also very breathable.  I'm someone who can't sleep if I'm too hot or too cold but this pillow almost doesn't seem to have a hot or cold side like most traditional pillows do.  I'm also extremely happy with the fact than when I wake up I don't wake up in pain!  I'm not lying when I say I feel like I'm sleeping on a cloud.