Can I use the mattress on a sofa bed? September 19, 2018 13:15 Updated Follow We don't recommend using Simbas with a sofa bed as folding the mattress in that way may damage the spring layer inside. Related articles Do I need to use a mattress protector? Can I use an electric blanket with my Simba? Do I turn my mattress over regularly? Can I use an adjustable bed? Can I machine wash my Simba bedding?