In most Westin hotels, these are the two pillows up front in their bedding arrangement (with the real down pillows in the back).  It does make a bit of a crunchy sound when you move around on it, but is exceptionally comfortable and provides more support than the down pillows.  Obviously Westin lets you choose whichever pillow you’d like to sleep on, but there’s no question why this one is “front and center.”