what is the difrence of a sofa sleepers and futons???

Posted under futons

if there is a difrence???
and are the comfy?
what are the good and bads for each of them???

thanks

Sofa sleepers generally look like a regular living room sofa. A futon is built differently, usually absent padded arm rests and padded cushions and having one large mattress that sits on a wood or metal frame which makes down into a bed or can have one side raised up to make a bench.

http://en.wikipedia.org/wiki/Futon