These poly filled pillow inserts are a replacement for previously purchased feather pillows from WayFair. The feather  inserts were a disaster as the individual feathers poked through the pillows with the sharp quill end coming through which was very prickly and uncomfortable. My “porcupine” pillows are now in the garbage. 

Thankfully these poly-filled pillows are soft, no sharp quills sticking out and they keep their shape.  I had not realized there was such a difference between down and feathers.  To give you an idea of how unsatisfactory the feather insert was, I probably extracted 60 or more quills before I threw it out. Sometimes the natural item is not a better option than synthetic. I am hoppy with these particular pillow inserts and with the pillow covers they look really good.