These are great pillows. Very supportive, almost too much so if you are a side sleeper. When expanded fully ( the king size) fills up a king size pillowcase to almost burst capacity. I am hoping that they will “defluff” over time.
Definitely keep you cool at night. 

I thought that I ordered 2 sets of 2 pillows each and a box of 8 showed ( same price) up so I am storing the rest  for unexpected house guests. They come rolled up in a little plastic case with handles. When you unzip the case, the pillow comes out and expand. 
( very like a casper mattress).