The highest quality materials are used in making the Memory Foam Cooling Gel Classic Pillow a perfect choice for supplementing healthy sleeping habits with the soft comfort of Memory Foam and cooling body temperature regulation with Cooling Gel. The Memory Foam is highly durable as it is designed to maintain its soft feel and neck supporting structure for many years. The Cooling Gel is made from high grade non-toxic silica, which itself is made from naturally occurring minerals. Silicon Dioxide condensed into a gel layer becomes an efficient thermal conductor. When used on the top layer of a pillow, the silica gel effectively absorbs excess body heat emitted from human use, dispersing the heat away from the users head. This process of Thermal Conduction provides the pillow user with cooling relief whilst sleeping, maintaining an optimal body temperature for sleeping conditions.