adjustable beds: The term adjustable bed refers to a mattress over a foundation that incorporates motors that allow the user to raise and lower the foot and head of the bed. Adjustable beds offer benefits to people with certain medical conditions, like sleep apnea or acid reflux disease, but they are also useful for those who like to watch TV or read in bed. King size adjustable beds usually consist of two twin units side-by-side and require separate fitted sheets. Adjustable beds can often be used with traditional headboards and footboards to better integrate them with traditional decors.

air chamber beds: mattress that uses pockets of air that can be inflated or deflated at will, rather than using coils or springs. This allows for two people to have different mattress firmness in one bed. The chambers are surrounded by high density foam for support and structural integrity.