Sleeper sofas come in a range of sizes, from loveseats or chairs-and-a-half that convert into twin-sized beds and ... bracket in sofa form, then convert into a roughly king-size mattress.

This is the promise of the Axis Twin Sleeper Sofa from Crate and Barrel ... sleeping area is slightly larger than a queen-size bed). Traditional sofa beds have a bad reputation for being expensive ...