Thank you Tempur-Pedic for the free pillow to test out. I really like the removable cover and it does seem to do the job of keeping my head and neck cool during the night. I am primarily a back sleeper, but do sleep on my side. I'm a 5'4" average weight 40 year old woman. I don't feel the pillow adequately supports me while I'm on my side and sometimes after sleeping on my back I woke with a sore neck. I have been using it for about a week, so maybe more time? I did notice it's described as being ideal for larger framed people so that could be why.