Since my friend has a similar pillow, I made the switch. The pad is very comfortable and I was able to lie without problems on a few hours. However, I got after the second night all day headache. After several change of pillows and some test phases, if it really is on the panel, I am sorry to come to the conclusion that this pillow is not suitable for me. I must return the cushion is contacted by phone and was very impressed by the very nice and generous customer telephone service. 1 star I give for the pillow and my disappointment that it is not for me (The product has been fine but otherwise very well made and Top). For the really very good contact, I give 2 more stars: as customer contact must be!