NOTE: This review is based on using the pillow for 1 week. I am one of these people who is desperate to obtain the optimal sleep enviorment. After spending a lot of time and money I have managed to obtain a high level of satisfaction with regards to bed frame, mattress, bedsheets and duvets but have struggled to get the right pillow. The Panda pillow is the 7th one I have tried. None of the others, of all material types, have been satisfactory. The Panda pillow on the other hand, based on my 1st week's sleep, may finally be the one that achieves the desired level of satisfaction. It provides the right spinal balance, is the perfect firmness, does not sink too much when you lay your head down and does not get too hot. I have noticed a much improved sleep experience. No complaints thus far. The positive reviews are certainly spot on. An excellent product.