As for comfort, it is perfect.
I had tingling in the upper back and neck on waking, and they were already almost that does not exist in my first awakening with this pillow. the texture is super nice to the touch. when you press the pillow looks like it is freezing as in stress balls.
No regrets for having to buy.
In fact my only regret is not being able to buy all the family because of the price ^^ and not make the most of the capabilities of this pillow because I do not have the thermo cover