This pillow is my new go-to pillow for a great night's sleep.  I'm not sure what the pillow's filling is, but it's relatively firm and does a great job supporting my head throughout the night without sagging or forming divots.  I've struggled with snoring and I've found that firm pillows do a better job keeping my head aligned - Per my wife, this pillow has really helped to reduce my snoring.  In the morning, I wake up feeling more refreshed... that's a win in my book!  I've not really noticed any extra cooling compared to my previous memory foam pillow, but I've also never noticed my pillow getting too warm during the night (maybe I'm naturally a cool sleeper?).  I'm very happy with this pillow and look forward to sleeping on it every night.