I have serious back issues and have had solid luck with tempurpedic pillows previously. After the first night with this pillow, I had such pain from my neck down my back and arms. I have since returned to my previous pillow & taking my pain pills. This pillow has a weird filling to it that is lumpy and not a consistent balance of "stuffing". I will say the cooling affect was the only good thing I noticed and only redeeming factor. Unfortunately, I am now stuck with a pillow that is awful due to "no returns on pillows" and I have learned my lesson to only purchase pillows in person. Never purchase one online.