Memory Foam Pillows Fully conforming to the contours of your neck and head, memory foam pillows are greatly sought after for full support and ultimate comfort. Because it is temperature sensitive, memory foam molds and has a customized shaping. The memory foam also works so well due to the method in which its cells operate. Memory foam cells compress fully and spread their air pressure to adjoining cells, unlike the way standard foam springs back to its original shape after being compressed. The process in which the memory foam operates reduces the pressure points while molding to the bodies shape.