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A Firm Double Mattress Balances Comfort and Support A firm double mattress balances comfort and support. It's perfect for back sleepers. Firmer mattresses may help prevent the risk of sagging, which can cause back pain. They also help distribute weight evenly, reducing pressure to joints and muscles. For stomach and back sleepers, or for people with a substantial build, a mattress that is firm is advised. However, it may be uncomfortable for side sleepers. Comfort The correct mat
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