A sofa bed or sofa-bed (in the US often called a sofabed, hide-a-bed, bed-couch, sleeper-sofa, or pullout sofa) is typically a sofa or couch that, underneath its seating cushions, hides a metal frame and thin mattress that can be unfolded or opened up to make a bed.
What is a Trumbull bed?
Alwyn Home Trumbull 8'' Medium Pillow Top Sofa Bed Mattress It features individually wrapped pocket coils that isolate motion between sleeping partners. It is a firm innerspring mattress that avoids the sag and sink of foam and air mattresses.
Why is it called a trundle?
trundle bed, also called truckle bed, a low bed, so called from the trundles, or casters, that were attached to the feet so that it could be pushed under the master bed when it was not in use. The bed was intended for servants, who used to sleep in their employer's room so as to be near at hand.