Wow. I have been struggling with neck pain for several months before deciding to purchase this pillow. I am a side sleeper and have 3 different solid foam pillows and all of a sudden no matter which I tried my neck was stiff as a board every time I woke up. I could tell after 1 night this pillow would be a game changer. Woke up with zero stiffness and a week later I can still say the same. Very happy with my purchase.