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is one that can be used both as a sleeping area and a sofa cushion. They are available in various sizes such as full queen, twin, and King. These beds feature a firmer surface that can help alleviate back pain. This is particularly helpful for pregnant women suffering from back pain. Firmness A futon mattress double is a thin bed that doubles as sofa. Futon mattresses usually come with a polyester or cotton cover and a mattress that is flexible enough to