If the foam in your sofa cushions is not up to the task, it can start to disintegrate and lose its rebound ability in a short time. The sagging cushions can make the whole piece of furniture appear old and tired and make it very uncomfortable for sitting. Replacing the foam is a task a DIY-err can face with confidence when armed with some couch cushion foam know-how. TIRED OF YOUR SAD-LOOKING COUCH? GIVE IT A TOUCH-UP! With these high-quality, premium upholstery foam cushions, you can easily replace your old foam while retaining your much-loved couch! Made of polyurethane foam and available in 3 different densities, you get a foam with the perfect amount of cushioning and stiffness. Each foam cushion would hold its firmness for 3-7 years, depending on the density and the usage.