Maybe this is too much of a good thing... this says WON'T GO FLAT....and that's exactly right! They are very thick! I can usually sleep with either one or two pillows at night but this ONE pillow gives me a sore neck. It's very uncomfortable in my opinion. I would have returned it but didn't want to pay the shipping plus a a fee for opening the product. I am also use to some feathers in my pillows so this one felt cheap to me. That's my fault though because I didn't read the materials before purchasing.