Futon Beds:

Buying a futon can be a great alternative to buying an expensive mattress and bed frame. Futons usually act as a combined couch and bed, and can be found in almost all standard bed sizes. Futons can be made in any material from wood to medal frames. They are durable and the futon mattress is generally made from cotton or foam. Futons can be a great way to accommodate an overnight guest as it is easy to convert from a coach to a sleeping surface while still being stylish. Parts of a futon bed include:

The Slat Rack- The platform that the futon rests on, or the frame

The Back Seat- The part of the futon your back rests against when sitting

The Seat Rack- The part of the futon which supports the body when sitting

Read more about Futon Mattresses here.