This sofa style is designed for comfort.  Its signature design element is a back comprised of pillows separate from the frame.

The reason for this design is to create a softer, more cushioned sofa with large cushions that aren’t taught within the frame of the sofa.

It continues to be a popular sofa design today.  You can buy a Lawson style sofa in many sizes, colors and materials.  In addition to being uber comfortable, you can move the large pillows around for ultimate comfort.