Craving a cozy night in? sectionals sofas is the perfect way to cuddle up—with your feet up. Sectionals were invented when an unknown furniture designer decided to attach the ottoman to the sofa and make it one piece. They’ve increased in popularity in the past decade or so, as more and more family time is being spent in the great room viewing television shows and movies at home. A sectional’s design allows you to completely relax and recline in a horizontal position—as opposed to an upright arm chair or more classic, formal sofa style.