Answer: mattresses

AnswerCrossword Clue
MATTRESSESLying often involves them
MATTRESSESInnerspring items.
MATTRESSESSupporters with springs
MATTRESSESWhoopee cushions?
mattressesA flat structure of brushwood, concrete, or other material used as strengthening or support for foundations, embankments, etc
mattressesMATTRESS, a large padded cushion used on a bed
mattressesA fabric case filled with deformable or resilient material, used for sleeping on