I do think there is a material difference between this pillow versus others with respect to temperature. I think in a previous life I must have been a polar bear or something; I like a cold environment. This pillow helps, but it's a matter of degrees, and I would say that overall it's not such a great investment. One thing in particular stands out - since I like it cold, I notice that the colder the room temperature, the firmer this pillow gets, and sometimes it's a flat-out brick. At this price, I don't think I really need the trouble.