Sleeper sofas come in a range of sizes, from loveseats or chairs-and-a-half that convert into twin-sized beds and full-sized sofas that contain queen- or king-sized mattresses. Like buying a sofa ...

Two years later, my relatives still use this pull-out bed on a regular basis ... a design like the Haven Chair and a Half Sleeper, which pulls out into a twin-size mattress.

A sleeper sofa is a space-efficient way to put guests up for the night and have somewhere to sit during the day. But the mattresses that come with sofa beds can ... pick up a twin for $39.99 ...