A mattress is a large pad for supporting the reclining body, used as or on a bed. Mattresses may consist of a quilted or similarly fastened case, usually of heavy cloth, that contains hair, straw, cotton, foam rubber. A framework of metal springs, or they may be inflated.
Mattress higher-density foam softens in reaction to body heat, allowing it to mold to a warm body in a few minutes.
Knowledge of the types of mattresses available and an understanding of the physical components of a mattress will enable you to better evaluate and compare different mattresses.