Sofa sets are made up of a long, narrow piece of wood with a piece of cloth or other material attached to it. The long piece of wood is typically a hardwood, such as oak or maple, and the cloth is usually a cotton fabric.

Typically, wood and metal are used for sofa frames, both of which are durable and provide years of comfortable seating. The KING sofa frame is precision engineered from high-grade galvanised steel, however, there are also many respected furniture brands and designers who craft sofas with a wood fame.