Generally a visco-elastic foam containing “beads” or particles of semi-solid gel — also called “gel-infused foam.” Originally used in medical products to help prevent decubitus ulcers, gel is a popular component in consumer mattresses and pillows. Semi-solid, poured gel also can be used as a separate component in the comfort layer of a bed. Another type of solid gel comfort layer found in mattresses has a honeycomb or grid profile and used at the top of the bed, beneath the ticking.
