I'm on my 3rd night of using the level 3 Performance Pillow and so far I been sleeping so much cooler than I have with any other pillow.  Usually I need 2 pillows to sleep on I'm a multi position sleeper and with this 1 pillow I have not waken up with my head drenched in sweat.  I like the indent with is great for sleeping on my side gives a place for my shoulder and it also is good to put my neck in when sleeping on my back .